LEGO Mechanical Engineering 9665-1
LEGO Mechanical Engineering (9665-1) is worth about $93 on the secondary market today, against a $267 retail price. It has 318 pieces, belongs to the Dacta theme and was released in 2003. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale
- Set number
- 9665-1
- Theme
- Dacta
- Subtheme
- Technic
- Year
- 2003
- Pieces
- 318
- Minifigures
- 0
- RRP
- $267
- Market value
- $93
- Retirement
- Retired
Frequently asked questions
How much is LEGO Mechanical Engineering (9665-1) worth?
LEGO Mechanical Engineering is worth approximately $93 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Mechanical Engineering retired?
Yes — Mechanical Engineering (9665-1) 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 Mechanical Engineering gone up in value?
Not currently. Mechanical Engineering launched at $267 and trades around $93 today, 65.2% below its retail price. The price history chart shows the full trend.
What is the price per piece for Mechanical Engineering?
At its $267 retail price across 318 pieces, Mechanical Engineering works out to about $0.840 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Mechanical Engineering a good investment?
Mechanical Engineering currently trades 65.2% below its $267 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 Mechanical Engineering so expensive?
Mechanical Engineering was released in 2003 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.