Set 70921
Harley Quinn Cannonball Attack
Retired Feb 2019Retail price$49.99What LEGO charged
Worth now$177.38Based on 5 recent sealed sales
Asking now$199.19Typical price on 6 eBay listings
vs retail+255%Worth more than it cost
Proven performer
Up 255% on its $50 retail price since retiring. Pay under $102 to still make a margin reselling.
How much is LEGO 70921 Harley Quinn Cannonball Attack worth?
LEGO 70921 Harley Quinn Cannonball Attack is worth about $177.38 sealed right now, based on 5 recent sealed sales. That's 255% above its $49.99 retail price. It came out in 2018 with 425 pieces and 4 minifigures. It was retired in Feb 2019. Over the last 83 days its typical asking price has risen 23%, from $162.47 to $199.19. We last checked it 7 days ago.
Price history
Value history
Oct 20$1996 listings
- Lowest
- $145
- Highest
- $209
- Change
- +23%
- Asking vs retail
- +298%
26 observations · median asking · rechecked 8× daily
Should you buy it?
Retired 8 years ago and now 4.0× retail. The people who bought two are very happy.
If you bought it to resell
Sells sealed for$177
Marketplace fees · 15.25%−$27
Payment processing · 2.9% + $0.30−$6
Shipping · est. from 425 pieces−$13
Reaches you$132
Pay no more than$101
For a 30% return at your costs. Change them and every figure on the site follows.
What it actually sold for
Sealed
$177
5 sold in six months · $145–$210Sellers are asking 12% more than buyers actually paid. The $199 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.
Worth more in pieces?
Parted out$226vsSealed$177
Parting it out is worth about 27% more than selling it sealed — that gap is why this set gets broken.
- Minifigures
- $178
- Loose parts
- 438 pieces
Minifigure prices are real completed BrickLink sales. The parts figure is an estimate — the set’s own inventory at the catalogue average, not each piece priced individually. Treat it as a guide, and remember parting out is hours of work and many small sales.
Set details
- Set number
- 70921
- Theme
- Super Heroes DC · The LEGO Batman Movie
- Released
- 2018
- Status
- Retired Feb 2019
- Pieces
- 425
- Minifigures
- 4
- Retail price
- $49.99
- Value per piece
- $0.469
- Price confidence
- medium · 6 listings
- Last checked
- 7 days ago
Where these numbers come from
eBay6 live listingsThe asking price here — the median of what sellers want right now, $199. Last checked Oct 20.See the listings →BrickLink5 completed salesWhat it actually sold for — $177 across six months of real transactions. Last checked Oct 22.Open the price guide →Catalogue425 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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