LEGO 30704 Sonic the Hedgehog Balkiry Attack

Name: LEGO Sonic the Hedgehog Balkiry Attack
Brand: LEGO
SKU: 30704-1
Availability: InStock
Rating: 4.70 (13 reviews)

LEGO 30704 Balkiry Attack is a Sonic the Hedgehog set currently available at retail for $4.99 and is projected to retire in mid 2027. Current new-sealed secondary market prices range from $7 to $12, with the average above MSRP at $5. Momentum for the set is building, helped by an approaching retirement.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.

LEGO 30704 Balkiry Attack is a Sonic the Hedgehog Classic Games set released in 2025, containing 42 pieces. It builds a brick-built Balkiry Badnik with a small Clucky companion, with Clucky’s design based on the Flicky-style animal mold seen in prior LEGO Sonic sets. The polybag marks the debut of Balkiry as a physical LEGO build and incorporates notable elements, including a yellow front piece and a red tail element not seen in that color since 2003. In-game, Balkiry is a bird-like Badnik created by Dr. Robotnik (Eggman) that first appeared in Sonic CD (1993), known for aerial attacks and bomb drops.

Once retired, the expected annual growth will be close to 3% after the second year, valuing the set between $6 and $6 shortly after it is retired.

Retirement risk.Balkiry Attack has been available for 20 months. Based on the average lifespan of comparable sets (15 months), this set may be at risk of retiring in the coming months.

For Sale (New/Sealed)

This chart shows the sales listing trends of 30704 Balkiry Attack.

	(US) Sonic the Hedgehog 30704 Balkiry Attack 42 Pieces	BrickEconomy Choice $5.90
	(US) Sonic: Balkiry Attack (30704)	$5.95 +19.2%
	(US) Sonic The Hedgehog 30704 Balkiry Attack	$5.99 +20.0%
	(US) LEGO Sonic the Hedgehog 30704-1 Balkiry Attack polybag	$5.99 +20.0%
	(US) 30704 Sonic the Hedgehog Balkiry Attack Polybag NEW SEALED	$5.99 +20.0%
	(US) Sonic: Balkiry Attack (30704)	$5.99 +20.0%
	(US) 30704 Sonic The Hedgehog Balkiry Attack - Polybag Set - New	$5.99 +20.0%
	(US) 30704 Building Set Sonic the Hedgehog BALKIRY ATTACK PolyBag NEW SEALED	$5.99 +20.0%
	(CA) Sonic Balkiry Attack 30704 GWP Lego Set NEW	$6.42 +28.7%
	(US) Sonic: Balkiry Attack 30704 new Sealed Was GWP Stocking Stuffer	$6.95 +39.3%
	(US) Sonic: Balkiry Attack (30704) Retired 42 piece collectible stocking stuffer	$6.95 +39.3%
	(US) Sonic the Hedgehog Balkiry Attack 30704 Polybag Set 42 Pcs New Sealed	$6.99 +40.1%
	(US) Balkiry Attack 30704 Polybag 42 Pieces 6+ Sonic NEW, Sealed	$6.99 +40.1%
	(US) Sonic the Hedgehog Balkiry Attack 30704 Polybag Set 42 Pcs New Sealed	$6.99 +40.1%
Picked for your regionShow 43 more listings
	(US) 30704 Sonic The Hedgehog Balkiry Attack Polybag Sealed New	$6.99 +40.1%
	(US) Sonic The Hedgehog 30704 Balkiry Attack	$6.99 +40.1%
	(US) 30704 - Sonic Balkiry Attack - Sonic the Hedgehog Polybag- 42 Pieces - New	$7.00 +40.3%
	(US) Sonic the Hedgehog 30704 Balkiry Attack Polybag 42 pcs Limited Edition	$7.00 +40.3%
	(CA) Sonic The Hedgehog Balkiry Attack Polybag 30704 (SEALED)	$7.14 +43.1%
	(CA) 30704 Sonic The Hedgehog Balkiry Attack - Polybag Set - New	$7.14 +43.1%
	(US) 30704: SONIC THE HEDGEHOG 42 PCS BALKIRY ATTACK (6+) NEW/SEALED + FREE GIFT	$7.19 +44.1%
	(US) 30704: SONIC THE HEDGEHOG 42 PCS BALKIRY ATTACK (6+) NEW/SEALED + FREE GIFT	$7.19 +44.1%
	(US) Sonic The Hedgehog Balkiry Attack Polybag 30704	$7.36 +47.5%
	(US) Sonic: Balkiry Attack (30704)	$7.49 +50.1%
	(US) 30704 Sonic the Hedgehog Balkiry Attack Polybag with 42 PCS BRAND NEW	$7.49 +50.1%
	(AU) 30704 Balkiry Attack - Sonic - New with Tag - AU Seller	$7.69 +54.1%
	(US) New, Sealed LEGO Sonic the Hedgehog Set 30704 - Balkiry Attack paper bag	$7.69 +54.1%
	(US) BALKIRY ATTACK Sonic the Hedgehog LEGO 30704 Polybag 42 PCS	$7.92 +58.7%
	(US) \| Sonic: Balkiry Attack \| 30704 \| NEW	$7.95 +59.3%
	(US) new LEGO Sonic BALKIRY ATTACK set 30704 Factory Sealed w/ Bird Minifigure 3918	$7.99 +60.1%
	(US) Sonic: The Hedgehog Balkiry Attack (30704)	$7.99 +60.1%
	(US) 30704 Sonic Balkiry Attack 42 pcs Polybag New	$8.00 +60.3%
	(US) Sonic: Balkiry Attack (30704)	$8.42 +68.7%
	(US) Sonic: Balkiry Attack (30704)	$8.50 +70.3%
	(US) Sonic The Hedgehog 30704 Balkiry Attack	$8.80 +76.4%
	(IT) Sonic 30704 - Balkiry Attack - New Sealed	$8.92 +78.8%
	(US) Sonic: Balkiry Attack (30704)	$8.99 +80.2%
	(US) Sonic the Hedgehog BALKIRY ATTACK 30704 42 Piece Kit	$8.99 +80.2%
	(US) Sonic: Balkiry Attack (30704)	$9.00 +80.4%
	(US) FREE SHIP BALKIRY ATTACK Sonic the Hedgehog LEGO 30704 Polybag 42 PCS	$9.59 +92.2%
	(US) 30704 Sonic The Hedgehog Balkiry Attack Polybag Sealed New	$9.89 +98.2%
	(US) 30704 Sonic the Hedgehog Balkiry Attack Polybag NEW SEALED	$9.95 +99.4%
	(US) 30704 Sonic the Hedgehog Balkiry Attack 42 pieces in New Sealed Polybag	$9.99 +100.2%
	(US) Sonic The Hedgehog Balkiry Attack Paper Bag 30704	$9.99 +100.2%
	(US) Sonic The Hedgehog Balkiry Attack Paper Bag 30704 NEW	$9.99 +100.2%
	(US) Sonic The Hedgehog Balkiry Attack 30704 New Sealed Polybag Retired Set	$10.00 +100.4%
	(US) Sonic The Hedgehog Balkiry Attack 30704 Sealed Mint Condition New	$10.00 +100.4%
	(US) Sonic: Balkiry Attack (30704)	$10.00 +100.4%
	(US) Sonic 30704 Balkiry Attack, polybag	$10.00 +100.4%
	(US) Sonic: Balkiry Attack 30704 new Sealed	$10.00 +100.4%
	(US) SEALED NEW Sonic Balkiry Attack 30704 42pcs Polybag Set Hedgehog Animals	$10.00 +100.4%
	(US) Sonic the Hedgehog Balkiry Attack #30704 Poly Bag NEW SEALED	$10.00 +100.4%
	(US) 30704 Sonic The Hedgehog Balkiry Attack Polybag Set 42 pcs Sealed	$10.45 +109.4%
	(US) Sonic The Hedgehog: Balkiry Attack 30704	$10.50 +110.4%
	(US) Sonic the Hedgehog Balkiry Attack Paper Polybag (30704)	$10.99 +120.2%
	(IT) 30704 Sonic il Riccio Balkiry Attacco Polybag Nuovo Sigillato	$11.35 +127.5%
	(CA) Sonic the Hedgehog Balkiry Attack 30704 Polybag 42 Pieces New Sealed	$12.85 +157.5%
	(AU) 30704 Sonic The Hedgehog Balkiry Attack Clucky Bird Video Game Gift Idea	$13.37 +167.9%

Market Momentum

Bullish

Balkiry Attack (30704) sells at or near its retail price as member interest rises and retirement draws closer. The 2025 set includes a buildable Balkiry figure.

BearishBullish

DemandBottom 25% in Sonic the Hedgehog

High demand

12 months agoToday

Price vs retailLast 21 days

18% above retail

Lowest new price at eBay

Outlook:7% bearish·31% neutral·62% bullish

Why it's moving, signals and outlook

Compared with other Classic Games sets

$0.19 a piece

New and sealed value per piece

This set

$0.19

Typical

$0.14

About 35% above the group's typical value per piece.

Classic Games sets by value	Year	Value	Since retail	Per piece
76994 Sonic's Green Hill Zone Loop Challenge	2023	$100	+0%	$0.12
76991 Tails' Workshop and Tornado Plane	2023	$97	+143%	$0.26
77006 Team Sonic Command Truck	2025	$70	+1%	$0.09
76992 Amy's Animal Rescue Island	2023	$59	+17%	$0.15
76998 Knuckles and the Master Emerald Shrine	2024	$40	+14%	$0.12
30704 Balkiry Attack	2025	$7.82	On sale	$0.19

Balkiry Attack Questions

What does LEGO 30704 Balkiry Attack sell for now?

New copies of Balkiry Attack are valued at $5 on the secondary market right now. On the used market, expect to pay around $6.

Is LEGO 30704 Balkiry Attack still available?

Yes. Released in February 2025, Balkiry Attack is still in production. LEGO has not announced a retirement date. The typical Classic Games set lasts about 15 months; this one has been out for 20 months.

Is LEGO 30704 Balkiry Attack worth more than its retail price?

Yes. At $5, Balkiry Attack sits 7% above retail ($4.99).

What is the piece count of LEGO 30704 Balkiry Attack?

Balkiry Attack is built from 42 pieces, or $0.12 per piece at retail.

Top lists

Top LEGO Sets by Growth 2020s Most Valuable LEGO Sets (2016-2026)Most Valuable LEGO Sets

My Collection

I own this set

I want this set

Set Details

Set number

30704-1

Name

Balkiry Attack

Theme

Sonic the Hedgehog

Subtheme

Classic Games

Year

2025

Released

February 2025

Availability

Limited retail

Packaging

Polybag

Pieces

42 (PPP $0.12)

Set Pricing

Retail price

$4.99

Market price

$5.36+7.0%

Still available at retail

Prices are currently typical for this set but higher than the retail price of $4.99.

This LEGO set typically sells between $5-$7 locally. The average price is higher than the retail price of the set.

Quick Buy

eBay

In stockBuy

Best price

$5.90

*Listings are for new/sealed sets.

Set Predictions

Retirement

Mid 2027 70.7%

New/Sealed

Retirement pop

+8.77%

Annual growth

+3.39% (first year)

+2.88% (second year)

1 year retired

$5.61Mid 2028

5 years retired

$6 - $6

$5.99

$6.24

The estimated value of 30704 Balkiry Attack is projected to range between $5.99 - $6.24 within five years of retirement.

Set Facts

The set includes Clucky, an animal buddy character that has appeared in prior LEGO Sonic sets, with a design based on the Flicky mold. The polybag set is the debut of Balkiry as physical brick-built.
The Valkyrie Badnik build incorporates new and rare pieces, such as a yellow front element and a red tail piece that was last introduced in this color in 2003.
Balkiry is an enemy character from the Sonic the Hedgehog. It is a bird-like Badnik (robot enemy) created by Dr. Robotnik (Eggman). Balkiries often attack by flying and dropping bombs in levels, posing a threat with their aerial mobility. They first appeared in Sonic CD (1993).

Regional Retail Prices (LEGO.com/Store)

United States

$4.99

Canada

$6.94

Europe

€3.99

Balkiry Attack Reviews

13 reviews

4.7

Collectors

Investors

BrickEconomy Member Review

“The LEGO Sonic the Hedgehog Valkyrie Attack polybag introduces an exclusive Badnik build with rare parts, like the tail piece in red and a yellow front element. While the design includes creative details such as a flying stand and printed eyes, the inclusion of the Clucky figure feels repetitive given its availability in other sets.”

Bricksfanz

“The previous Sonic miniset ignored minifigures for a focus on a unique buildable Badnik, not featured in a larger set. This trend continues with this little set. The unique Badnik is Balkiry, a bird-like robot, first seen in Sonic 2. There’s an area on the Badnik’s back... More where you can place the Clucky figure. The use of the new curved corner brick for the bird’s beak looks great. I like that the Badnik is unique and not simply a rehash of one found in another set.”

Full review at bricksfanz.com

Subtheme Analysis

Sonic the Hedgehog / Classic Games

Sets

Years

2023 - 2025

Lifespan

15 mos (this set 20 mos)

Annual growth

+3.89%

Community Stats

Balkiry Attack currently ranks #1 out of the top most owned sets in Sonic the Hedgehog Classic Games.

#1Balkiry Attack

#2Amy's Animal Rescue Island

#3Sonic's Green Hill Zone Loop Challenge

#4Tails' Workshop and Tornado Plane

#5Knuckles and the Master Emerald Shrine

#6Sonic's Speed Sphere Challenge

#7Tails' Adventure Boat

#8Team Sonic Command Truck

About Sonic the Hedgehog Classic Games

The LEGO Sonic the Hedgehog Classic Games theme celebrates the iconic video game series from the early 1990s, featuring sets inspired by the original Sonic games released on the Sega Genesis. This theme includes detailed builds and minifigures representing key characters such as Sonic the Hedgehog, Tails, and Dr. Robotnik, as well as iconic locations like Green Hill Zone. Notable elements often include loop-de-loops, palm trees, and collectible rings, capturing the fast-paced platforming and vibrant aesthetics of the classic games.

Classic Games currently consists of 8 sets that as of now has run from 2023 to 2025. As of today, 76994 Sonic's Green Hill Zone Loop Challenge is the most valuable Classic Games set with an estimated new/factory sealed value of $100.

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Action and high-flying adventure await kids as they help rescue the Clucky from the Balkiry Badnik. The set includes a mini Clucky figure and a buildable Balkiry figure.


	76994 Sonic's Green Hill Zone Loop Challenge Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2023 Pieces / Minifigs 802 / 5 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $99.99 Value $100.00 Growth +0.0% Annual growth 1.3% I own this set I want this set

	77006 Team Sonic Command Truck Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2025 Pieces / Minifigs 747 / 5 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $69.99 Value $70.36 Growth +0.5% I own this set I want this set

	76997 Tails' Adventure Boat Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2024 Pieces / Minifigs 393 / 3 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $59.99 Value $58.86 I own this set I want this set

	76992 Amy's Animal Rescue Island Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2023 Pieces / Minifigs 388 / 3 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $49.99 Value $58.59 Growth +17.2% Annual growth 4.8% I own this set I want this set

	76991 Tails' Workshop and Tornado Plane Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2023 Pieces / Minifigs 376 / 4 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $39.99 Value $97.19 Growth +143.0% Annual growth 22.7% I own this set I want this set

	76998 Knuckles and the Master Emerald Shrine Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2024 Pieces / Minifigs 325 / 2 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $34.99 Value $39.99 Growth +14.3% I own this set I want this set

	76990 Sonic's Speed Sphere Challenge Theme / Subtheme Sonic the Hedgehog / Classic Games Year 2023 Pieces / Minifigs 292 / 3 Availability Retired Buy this set at Amazon eBay BrickLink	Retail $34.99 Value $33.80 I own this set I want this set

30704 LEGO Sonic the Hedgehog Balkiry Attack

Forecast Model

For Sale (New/Sealed)

Market Momentum

Compared with other Classic Games sets

Sets in Sonic the Hedgehog / Classic Games

76994 Sonic's Green Hill Zone Loop Challenge

77006 Team Sonic Command Truck

76997 Tails' Adventure Boat

76992 Amy's Animal Rescue Island

76991 Tails' Workshop and Tornado Plane

76998 Knuckles and the Master Emerald Shrine

76990 Sonic's Speed Sphere Challenge