Set 42123
McLaren Senna GTR
Retired Feb 2024Retail price$49.99What LEGO charged
Worth now$48.95Typical sealed asking price · 41 listings
Recently sold$35.99Only 2 sales so far — too few to lean on
vs retail−2%Worth less than shop price
Flat since retirement
Still trading near its $50 retail price. Retirement alone hasn't moved it.
How much is LEGO 42123 McLaren Senna GTR worth?
LEGO 42123 McLaren Senna GTR is worth about $48.95 sealed right now, based on 41 live sealed listings on eBay. That's 2% below its $49.99 retail price. It came out in 2021 with 830 pieces. It was retired in Feb 2024. Over the last 82 days its typical asking price has fallen 2%, from $50.00 to $48.95. We last checked it 8 days ago.
Price history
Value history
Oct 19$4941 listings
- Lowest
- $49
- Highest
- $55
- Change
- -2%
- Asking vs retail
- -2%
26 observations · median asking · rechecked 8× daily
Should you buy it?
Retired, but it never really took off. Some sets just don’t.
If you bought it to resell
Sells sealed for$49
Marketplace fees · 15.25%−$7
Payment processing · 2.9% + $0.30−$2
Shipping · est. from 830 pieces−$18
Reaches you$21
Pay no more than$16
For a 30% return at your costs. Change them and every figure on the site follows.
What it actually sold for
Sealed
$36
2 sold in six months · $35–$37Used
$21
4 sold in six monthsSellers are asking 36% more than buyers actually paid. The $49 figure above is a ceiling; this is the floor to negotiate toward.
Completed BrickLink transactions over the last six months. Real sales, not asking prices.
Set details
- Set number
- 42123
- Theme
- Technic
- Released
- 2021
- Status
- Retired Feb 2024
- Pieces
- 830
- Minifigures
- —
- Retail price
- $49.99
- Value per piece
- $0.059
- Price confidence
- high · 41 listings
- Last checked
- 8 days ago
Where these numbers come from
eBay41 live listingsThe asking price here — the median of what sellers want right now, $49. Last checked Oct 19.See the listings →BrickLink2 completed salesWhat it actually sold for — $36 across six months of real transactions. Last checked Oct 24.Open the price guide →Catalogue830 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $50.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.
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