Set 21366
Floating Sea Otters
On shelves nowRetail price$119.99What LEGO charged
Worth now$118.11Typical sealed asking price · 25 listings
Recently sold—No recent sales on file
vs retail−2%Worth less than shop price
Not at retail
At $120 retail there's no margin left — pay under $65.
How much is LEGO 21366 Floating Sea Otters worth?
LEGO 21366 Floating Sea Otters is worth about $118.11 sealed right now, based on 25 live sealed listings on eBay. That's 2% below its $119.99 retail price. It came out in 2026 with 1,234 pieces. It's still sold in shops. Over the last 87 days its typical asking price has fallen 2%, from $119.99 to $118.11. We last checked it 3 days ago.
Price history
Value history
Oct 22$11825 listings
- Lowest
- $109
- Highest
- $120
- Change
- -2%
- Asking vs retail
- -2%
27 observations · median asking · rechecked 8× daily
Should you buy it?
25 listings. Solid number.
If you bought it to resell
Sells sealed for$118
Marketplace fees · 15.25%−$18
Payment processing · 2.9% + $0.30−$4
Shipping · est. from 1,234 pieces−$18
Reaches you$78
Pay no more than$60
For a 30% return at your costs. Change them and every figure on the site follows.
How long has it been on shelves?
Still early — released 2026, and sets like this usually run about 3 years. No hurry.
LEGO never announces retirement dates. This is only how long the set has been available against how long sets of its size usually run — not a prediction, and not inside information.
Set details
- Set number
- 21366
- Theme
- LEGO Ideas and CUUSOO
- Released
- 2026
- Status
- On shelves now
- Pieces
- 1,234
- Minifigures
- —
- Retail price
- $119.99
- Value per piece
- $0.096
- Price confidence
- high · 25 listings
- Last checked
- 3 days ago
Where these numbers come from
eBay25 live listingsThe asking price here — the median of what sellers want right now, $118. Last checked Oct 22.See the listings →BrickLinkPrice guideNo completed sales recorded for this one yet. Last checked Oct 22.Open the price guide →Catalogue1,234 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $120.See the catalogue entry →
eBay links are affiliate links — if you buy after clicking, we earn a small commission at no cost to you, and that is what pays for the site. BrickLink has no such programme, so those are plain links. Neither changes what we show or what we say about it.
How to read this. The value is the median of live sealed listings, after removing instructions, empty boxes, used sets, multi-set lots and implausible outliers. Real sale prices usually land below asking, so the buy-below figure is deliberately the conservative end of the range.
More LEGO Ideas and CUUSOO sets from around 2026
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