Set 31115
Space Mining Mech
Retired Nov 2022Retail price$24.99What LEGO charged
Worth now$45.00Typical sealed asking price · 9 listings
Recently sold$44.99Only 2 sales so far — too few to lean on
vs retail+80%Worth more than it cost
Proven performer
Up 80% on its $25 retail price since retiring. Pay under $19 to still make a margin reselling.
How much is LEGO 31115 Space Mining Mech worth?
LEGO 31115 Space Mining Mech is worth about $45.00 sealed right now, based on 9 live sealed listings on eBay. That's 80% above its $24.99 retail price. It came out in 2021 with 327 pieces. It was retired in Nov 2022. Over the last 83 days its typical asking price has fallen 5%, from $47.50 to $45.00. We last checked it 7 days ago.
Price history
Value history
Oct 19$459 listings
- Lowest
- $40
- Highest
- $48
- Change
- -5%
- Asking vs retail
- +80%
26 observations · median asking · rechecked 8× daily
Should you buy it?
Up 80% on retail since retiring. A proper hold.
If you bought it to resell
Sells sealed for$45
Marketplace fees · 15.25%−$7
Payment processing · 2.9% + $0.30−$2
Shipping · est. from 327 pieces−$13
Reaches you$23
Pay no more than$18
For a 30% return at your costs. Change them and every figure on the site follows.
What it actually sold for
Sealed
$45
2 sold in six months · $40–$50Used
$28
3 sold in six monthsCompleted BrickLink transactions over the last six months. Real sales, not asking prices.
Set details
- Set number
- 31115
- Theme
- Creator · Creator 3-in-1
- Released
- 2021
- Status
- Retired Nov 2022
- Pieces
- 327
- Minifigures
- —
- Retail price
- $24.99
- Value per piece
- $0.138
- Price confidence
- medium · 9 listings
- Last checked
- 7 days ago
Where these numbers come from
eBay9 live listingsThe asking price here — the median of what sellers want right now, $45. Last checked Oct 19.See the listings →BrickLink2 completed salesWhat it actually sold for — $45 across six months of real transactions. Last checked Oct 25.Open the price guide →Catalogue327 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $25.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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