LEGO 71704 Kai Fighter is a Ninjago set valued at $90 for new and sealed sets, up 125% from an original retail price of $39.99. The set retired in November 2021 with annual appreciation averaging 14.27% since. Used copies are valued between $24 and $37 depending on condition. Secondary market prices for new and sealed sets typically fall between $81 and $106. With member interest holding steady, the market for the set remains level.

Kai Fighter Value (New/Sealed)

This chart represents the current new/sealed value of the set Kai Fighter since November 2021. Very high accuracy
LEGO 71704 Kai Fighter is a Ninjago Legacy set released in 2020, containing 513 pieces and 4 minifigures. It includes Kai and Lloyd alongside two Nindroid Warriors and features two main builds: the red Kai Fighter jet and a Nindroid missile launcher. The jet has an opening cockpit, adjustable wings, and spring-loaded shooters. The set is inspired by Season 3: Rebooted of the Ninjago TV series and is a re-imagined version of 2014’s 70721 Kai Fighter.

New and sealed, Kai Fighter is worth about $90 today. It has averaged 14.3% a year since it retired, and our forecast has it near $98 next year and $127 in five. The average used price is $28 for those in good overall condition. The 4 included minifigs account for approximately 23% of the set's total value. New and sealed listings currently range from $90 to $126. The set was available for 17 months, from June 2020 to November 2021.
Collector and Investor Standing
Ninjago Legacy revisits familiar battles, and the Kai Fighter gives collectors a jet with Kai, Lloyd and the Nindroid Warriors. The Warrior with black shoulder pads appears only here, giving the set a particular pull. For investors, Legacy's record of holding value and the fighter's frequent secondary market trades make a stronger case.
59/100
Collector
A steady following
Black shoulder pad Nindroid Warrior appears only here
82/100
Investor
Among the strongest
Legacy holds value; the fighter trades often

For Sale (New/Sealed)

(JP) Ninjago Legacy set Kai Fighter 71704 $75.23
-16.4%
(CA) NINJAGO Kai Fighter / Jet 71704 NISB $77.85
-13.5%
(AU) Ninjago LEGACY Kai Fighter #71704 BNIB $83.95
-6.7%
(US) Kai Fighter from BrickLink seller Jeffro $84.99
-5.5%
(US) Kai Fighter from BrickLink seller dspetko $88.00
-2.2%
(US) Kai Fighter from BrickLink seller Ganraeln $89.95
0.0%
(PA) Ninjago Legacy KAI FIGHTER 71704 513pcs sealed NEW Lloyd Nindrold Warrior $89.99
(US) 71704 Ninjago - Kai Fighter $89.99
(US) NINJAGO: Kai Fighter (71704) Sealed MINT $94.99
+5.6%
(US) Ninjago Legacy 71704 Kai Fighter Set New Sealed Retired $97.00
+7.8%
(US) 71704 NINJAGO LEGACY KAI FIGHTER- New, Sealed & Retired. $99.00
+10.0%
(GR) NINJAGO: Kai Fighter (71704) $100.00
+11.1%
(US) NINJAGO 71704 Kai Fighter NISB New & Sealed $104.95
+16.6%
(JP) Ninjago Kai Fighter 71704 Toy Block JAPAN81 $119.39
+32.7%
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Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 71704 Kai Fighter.

Sale Trends

This chart shows the sales trends of new/sealed 71704 Kai Fighter.

Market Momentum

Neutral
Since retiring in 2020, the Kai Fighter (71704) has grown faster than similar retired Ninjago Legacy sets over the past year. Its value has also edged up over the last three months while member interest stays steady. The set sits in the upper half of its theme for growth.
DemandUpper half in Ninjago
Very high demand
12 months agoToday
SupplyMore than most in Ninjago
Listings up 7% this month
12 months agoToday
Growth vs peers+33% typical for Legacy
+46% over the past year
12 months agoToday
Outlook:7% bearish·74% neutral·19% bullish
Why it's moving, signals and outlook

Compared with other Legacy sets

Kai Fighter's past year was stronger than that of similar sets, which goes a long way to explain why it lands mid-table among the Legacy sets.

#16 of 35
By growth since retail, +125%
+4%+567%
In the top half of the group.
$0.18 a piece
New and sealed value per piece
This set
$0.18
Typical
$0.29
About 40% below the group's typical value per piece.
#25 of 34
Used value as a share of new, 31%
17%78%
In the bottom half of the group.
#11 of 35 retired
Wanted for each member who owns it
This set
Typical
About 50% above the rate of the group's retired sets.
Top sets by growthSince retail
170667 Kai's Blade Cycle & Zane's Snowmobile+567%
270669 Cole's Earth Driller+400%
370665 The Samurai Mech+330%
1671704 Kai Fighter+125%

Related Sets

70721 Kai Fighter

Theme / Subtheme Ninjago / Rebooted
Year 2014
Pieces / Minifigs 196 / 2
Availability Retired
70721 LEGO Ninjago Rebooted Kai Fighter
Retail $19.99
Value $183.33
Growth  +817.1%
Annual growth 12.4%

Sets in Ninjago / Legacy

71705 Destiny's Bounty

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces / Minifigs 1,781 / 7
Availability Retired
71705 LEGO Ninjago Legacy Destiny's Bounty
Retail $129.99
Value $313.28
Growth  +141.0%
Annual growth 17.5%

71699 Thunder Raider

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces / Minifigs 576 / 5
Availability Retired
71699 LEGO Ninjago Legacy Thunder Raider
Retail $49.99
Value $189.72
Growth  +279.5%
Annual growth 14.5%

71702 Golden Mech

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces / Minifigs 489 / 4
Availability Retired
71702 LEGO Ninjago Legacy Golden Mech
Retail $39.99
Value $142.96
Growth  +257.5%
Annual growth 13.8%

71700 Jungle Raider

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces / Minifigs 127 / 1
Availability Retired
71700 LEGO Ninjago Legacy Jungle Raider
Retail $9.99
Value $20.00
Growth  +100.2%
Annual growth 14.1%

71701 Kai's Fire Dragon

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces / Minifigs 81 / 2
Availability Retired
71701 LEGO Ninjago Legacy Kai's Fire Dragon
Retail $19.99
Value $29.42
Growth  +47.2%
Annual growth 6.9%

30536 Combo Charger

Theme / Subtheme Ninjago / Legacy
Year 2020
Pieces 71
Availability Retired
30536 LEGO Ninjago Legacy Combo Charger
Retail $3.99
Value $5.51
Growth  +38.1%
Annual growth 6.1%

Kai Fighter Questions

What is the current value of LEGO 71704 Kai Fighter?

Sealed in its box, Kai Fighter is valued at $90, with most sales landing between $81 and $106. On the used market, expect to pay around $28.

Has LEGO 71704 Kai Fighter been retired?

Yes. Kai Fighter retired in November 2021, having been in production for 17 months, about as long as the typical Legacy set. Sealed copies are now found only on the secondary market, so the price follows what collectors will pay.

Has LEGO 71704 Kai Fighter increased in value?

Yes. Kai Fighter has gained 125% on its original retail price of $39.99, about 14.3% a year. That edges past the Legacy average of 11.4% a year.

How much could LEGO 71704 Kai Fighter be worth in a year?

Our one-year forecast has Kai Fighter at around $98 a year from now, about 8% more than today. The short-term market reading is neutral. Signals from demand, supply and price are mixed. Forecasts are estimates, not guarantees.

How many pieces and minifigures are in LEGO 71704 Kai Fighter?

The set contains 513 pieces, about $0.08 each at retail, with 4 minifigures: Lloyd, Nindroid Warrior (2) and Kai - Legacy. Their combined value is about $21, roughly a quarter of what the set is worth. Nindroid Warrior is the most valuable at $7.27. Nindroid Warrior cannot be found in any other set.

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Ninja fans who love creating iconic LEGO® NINJAGO® Legacy playsets and have a passion for playing with fun toys and buildable figures will be enthralled by the Kai Fighter (71704). This stunning building set for kids features a toy jet and 2 ninja and 2 Nindroid Warrior action figures.

Celebrate the famous history of NINJAGO by building this cool LEGO NINJAGO Legacy set, a modern and upgraded action toy from season 3 of the TV series. Kids will enjoy the fun challenge of putting it together from building bricks before staging epic ninja battles between Kai and Lloyd and the Overlord’s Nindroid Warriors.
Description provided by LEGO©