LEGO 3826 Build-A-Bob is a SpongeBob SquarePants set valued at $437 for new and sealed sets, up 1358% from an original retail price of $29.99. The set retired in March 2008 with annual appreciation averaging 8.74% since. Used copies are valued between $89 and $146 depending on condition. Secondary market prices for new and sealed sets typically fall between $338 and $658. The market for it is holding level, with growth ahead of similar sets balanced by a below-average forecast.

Build-A-Bob Value (New/Sealed)

This chart represents the current new/sealed value of the set Build-A-Bob since November 2016. Very high accuracy
LEGO 3826 Build-A-Bob is a SpongeBob SquarePants set released in 2006, containing 445 pieces and 1 minifigure. It builds a large brick-built model of SpongeBob with interactive functions including spinning eyes and changeable facial expressions. Accessories include jellyfish elements. The included minifigure is Plankton, and this is the only SpongeBob SquarePants set that does not include a SpongeBob minifigure.

At around $437 for a sealed copy, Build-A-Bob has averaged 8.7% a year since retirement. Our forecast sees it reaching about $578 within five years. The average used price is $122 for those in good overall condition. New and sealed listings currently range from $355 to $660.

For Sale (New/Sealed)

(US) Build-A-Bob SpongeBob SquarePants Set 3826, 445 Pieces, Ages 7-12
BrickEconomy Choice
$350.00
(DE) Build-A-Bob from BrickLink seller Gavial $319.35
-27.0%
(IT) Build-A-Bob from BrickLink seller CALATRAVA_STORE $366.53
-16.2%
(US) Build-A-Bob from BrickLink seller RedBrickManor $379.00
-13.3%
(CA) Build-A-Bob from BrickLink seller boourns79 $429.33
-1.8%
(US) SpongeBob SquarePants Build-A-Bob 3826 Set $450.00
+2.9%
(PT) SpongeBob SquarePants: Build-A-Bob (3826) $462.50
+5.8%
(US) Spongebob Build-A-Bob $699.99
+60.1%
Picked for your region

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 3826 Build-A-Bob.

Sale Trends

This chart shows the sales trends of new/sealed 3826 Build-A-Bob.

Market Momentum

Neutral
This set is outpacing its theme, but its forecast trails similar sets, so momentum is holding level.
DemandBottom 25% in SpongeBob SquarePants
High demand
12 months agoToday
Growth vs peers+18% typical for SpongeBob SquarePants
+46% over the past year
12 months agoToday
Outlook:22% bearish·45% neutral·33% bullish
Why it's moving, signals and outlook

Build-A-Bob Minifigs

Build-A-Bob contains 1 minifigure. Plankton is exclusive to this set.

Sets in SpongeBob SquarePants

3827 Adventures in Bikini Bottom

Year 2006
Pieces / Minifigs 579 / 3
Availability Retired
3827 LEGO SpongeBob SquarePants Adventures in Bikini Bottom
Retail $39.99
Value $383.23
Growth  +858.3%
Annual growth 8.1%

3818 Bikini Bottom Undersea Party

Year 2012
Pieces / Minifigs 471 / 4
Availability Retired
3818 LEGO SpongeBob SquarePants Bikini Bottom Undersea Party
Retail $49.99
Value $300.21
Growth  +500.5%
Annual growth 9.4%

3834 Good Neighbours at Bikini Bottom

Year 2009
Pieces / Minifigs 425 / 3
Availability Retired
3834 LEGO SpongeBob SquarePants Good Neighbours at Bikini Bottom
Retail $39.99
Value $259.33
Growth  +548.5%
Annual growth 9.0%

4982 Mrs. Puff's Boating School

Year 2007
Pieces / Minifigs 393 / 3
Availability Retired
4982 LEGO SpongeBob SquarePants Mrs. Puff's Boating School
Retail $49.99
Value $263.99
Growth  +428.1%
Annual growth 7.4%

4981 Chum Bucket

Year 2007
Pieces / Minifigs 337 / 3
Availability Retired
4981 LEGO SpongeBob SquarePants Chum Bucket
Retail $34.99
Value $434.37
Growth  +1141.4%
Annual growth 9.8%

3825 Krusty Krab

Year 2006
Pieces / Minifigs 295 / 3
Availability Retired
3825 LEGO SpongeBob SquarePants Krusty Krab
Retail $19.99
Value $441.37
Growth  +2108.0%
Annual growth 10.0%

3831 Rocket Ride

Year 2008
Pieces / Minifigs 279 / 3
Availability Retired
3831 LEGO SpongeBob SquarePants Rocket Ride
Retail $29.99
Value $366.33
Growth  +1121.5%
Annual growth 9.1%

3817 The Flying Dutchman

Year 2012
Pieces / Minifigs 241 / 3
Availability Retired
3817 LEGO SpongeBob SquarePants The Flying Dutchman
Retail $24.99
Value $200.71
Growth  +703.2%
Annual growth 11.2%

3832 The Emergency Room

Year 2008
Pieces / Minifigs 236 / 3
Availability Retired
3832 LEGO SpongeBob SquarePants The Emergency Room
Retail $29.99
Value $233.14
Growth  +677.4%
Annual growth 8.6%

3830 The Bikini Bottom Express

Year 2008
Pieces / Minifigs 210 / 3
Availability Retired
3830 LEGO SpongeBob SquarePants The Bikini Bottom Express
Retail $19.99
Value $200.00
Growth  +900.5%
Annual growth 9.0%

3833 Krusty Krab Adventures

Year 2009
Pieces / Minifigs 209 / 3
Availability Retired
3833 LEGO SpongeBob SquarePants Krusty Krab Adventures
Retail $24.99
Value $258.12
Growth  +932.9%
Annual growth 11.7%

3816 Glove World

Year 2011
Pieces / Minifigs 169 / 4
Availability Retired
3816 LEGO SpongeBob SquarePants Glove World
Retail $19.99
Value $178.66
Growth  +793.7%
Annual growth 11.8%

3815 Heroic Heroes of the Deep

Year 2011
Pieces / Minifigs 95 / 3
Availability Retired
3815 LEGO SpongeBob SquarePants Heroic Heroes of the Deep
Retail $14.99
Value $191.75
Growth  +1179.2%
Annual growth 12.8%

Build-A-Bob Questions

How much is LEGO 3826 Build-A-Bob worth today?

A new, sealed copy of Build-A-Bob is worth about $437 today, and most sealed copies sell for between $338 and $658. Its value has climbed 5% over the last 90 days. On the used market, expect to pay around $122.

Can you still buy LEGO 3826 Build-A-Bob from LEGO?

No. Build-A-Bob retired in March 2008, having been in production for 5 months. New copies now come only from the secondary market, where sellers on eBay and BrickLink set the price.

Is LEGO 3826 Build-A-Bob worth more than it cost?

Yes, by a wide margin. Build-A-Bob is now worth 1,358% more than its $29.99 retail price, about 8.7% a year.

Will LEGO 3826 Build-A-Bob go up in value?

Our forecast says yes. Our one-year forecast has Build-A-Bob at around $463 a year from now, about 6% more than today. The short-term market reading is neutral. Demand, supply and price signals are mixed or quiet. Forecasts are estimates, not guarantees.

How many pieces does LEGO 3826 Build-A-Bob have, and which minifigures are included?

Build-A-Bob is built from 445 pieces, about $0.07 each at retail. The minifigure included is Plankton. Plankton is valued at about $15. Plankton cannot be found in any other set.

Get a value badge
Show this set's value on your website or blog.
Plankton on the brain!

Just when you thought things couldn't get any wackier in Bikini Bottom'¦Plankton has taken over SpongeBob's brain and is making him do some wild things! Plankton can make SpongeBob spin his eyes, shoot jellyfish from his mouth, and change SpongeBob's expression from a frown to a smile. Set includes Plankton minifigure, jellyfish to shoot and much more! SpongeBob measures over 11.5 inches (29.2 cm) tall! Includes SpongeBob comic strip on the box!
Description provided by LEGO©