LEGO ETX Alien Mothership Assault 7691-1
LEGO ETX Alien Mothership Assault (7691-1) is worth about $213 on the secondary market today, against a $76 retail price. It has 434 pieces, belongs to the Space theme and was released in 2007. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 7691-1
- Theme
- Space
- Subtheme
- Mars Mission
- Year
- 2007
- Pieces
- 434
- Minifigures
- 7
- RRP
- $76
- Market value
- $213
- Used value
- $85
- Released
- 2007
- Retirement
- Retired in 2008
Minifigures in LEGO ETX Alien Mothership Assault
ETX Alien Mothership Assault value by year
From $81 in 2016 to $213 in 2026 so far: +165%. Its highest year was 2026, at $213.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $213 | +18.8% |
| 2025 | $179 | −2.4% |
| 2024 | $184 | −6.0% |
| 2023 | $196 | +15.9% |
| 2022 | $169 | +5.4% |
| 2021 | $160 | +2.0% |
| 2020 | $157 | −9.7% |
| 2019 | $174 | +63.2% |
| 2018 | $107 | +81.2% |
| 2017 | $59 | −27.0% |
| 2016 | $81 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 3 priced minifigures are worth about $7 together, roughly 3% of the set's value — low for Space sets, so the value is in the sealed set rather than the figures (typically 11%).
Frequently asked questions
How much is LEGO ETX Alien Mothership Assault (7691-1) worth?
LEGO ETX Alien Mothership Assault is worth approximately $213 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO ETX Alien Mothership Assault retired?
Yes — ETX Alien Mothership Assault (7691-1) 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 ETX Alien Mothership Assault gone up in value?
Yes. ETX Alien Mothership Assault launched at $76 and now trades around $213, an increase of 180.5%. See the price history chart for how it got there.
What is the price per piece for ETX Alien Mothership Assault?
At its $76 retail price across 434 pieces, ETX Alien Mothership Assault works out to about $0.175 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO ETX Alien Mothership Assault a good investment?
ETX Alien Mothership Assault currently trades 180.5% above its $76 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 ETX Alien Mothership Assault so expensive?
ETX Alien Mothership Assault was released in 2007 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.