LEGO Ultimate Builders Set 3800-1
LEGO Ultimate Builders Set (3800-1) is worth about $125 on the secondary market today, against a $111 retail price. It has 321 pieces, belongs to the Mindstorms theme and was released in 2001. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 3800-1
- Theme
- Mindstorms
- Subtheme
- 1.5
- Year
- 2001
- Pieces
- 321
- Minifigures
- 0
- RRP
- $111
- Market value
- $125
- Used value
- $39
- Released
- 2001
- Retirement
- Retired
Ultimate Builders Set value by year
From $70 in 2011 to $96 in 2026 so far: +37%. Its highest year was 2025, at $100.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $96 | −3.9% |
| 2025 | $100 | +41.0% |
| 2024 | $71 | −0.3% |
| 2023 | $71 | −24.3% |
| 2022 | $94 | +3.2% |
| 2021 | $91 | +2.3% |
| 2020 | $89 | +0.5% |
| 2019 | $88 | +1.9% |
| 2018 | $87 | +5.4% |
| 2017 | $82 | +2.0% |
| 2016 | $81 | +2.8% |
| 2015 | $78 | +2.8% |
| 2014 | $76 | +2.9% |
| 2013 | $74 | +3.0% |
| 2012 | $72 | +3.1% |
| 2011 | $70 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Ultimate Builders Set (3800-1) worth?
LEGO Ultimate Builders Set is worth approximately $125 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Ultimate Builders Set retired?
Yes — Ultimate Builders Set (3800-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Has LEGO Ultimate Builders Set gone up in value?
Yes. Ultimate Builders Set launched at $111 and now trades around $125, an increase of 13.0%. See the price history chart for how it got there.
What is the price per piece for Ultimate Builders Set?
At its $111 retail price across 321 pieces, Ultimate Builders Set works out to about $0.346 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Ultimate Builders Set a good investment?
Ultimate Builders Set currently trades 13.0% above its $111 retail price, and it is retired, so no new supply is entering the market. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.
Why is LEGO Ultimate Builders Set so expensive?
Ultimate Builders Set was released in 2001 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.