Set 71707
Kai's Mech Jet
Retired Sep 2021Retail price$19.99What LEGO charged
Worth now$52.50Typical sealed asking price · 13 listings
Recently sold$49.95Only 2 sales so far — too few to lean on
vs retail+163%Worth more than it cost
Proven performer
Up 163% on its $20 retail price since retiring. Pay under $23 to still make a margin reselling.
How much is LEGO 71707 Kai's Mech Jet worth?
LEGO 71707 Kai's Mech Jet is worth about $52.50 sealed right now, based on 13 live sealed listings on eBay. That's 163% above its $19.99 retail price. It came out in 2020 with 226 pieces and 2 minifigures. It was retired in Sep 2021. Over the last 83 days its typical asking price has fallen 1%, from $52.99 to $52.50. We last checked it 7 days ago.
Price history
Value history
Oct 19$5313 listings
- Lowest
- $46
- Highest
- $56
- Change
- -1%
- Asking vs retail
- +163%
26 observations · median asking · rechecked 8× daily
Should you buy it?
Retired 5 years ago and now 2.6× retail. The people who bought two are very happy.
If you bought it to resell
Sells sealed for$53
Marketplace fees · 15.25%−$8
Payment processing · 2.9% + $0.30−$2
Shipping · est. from 226 pieces−$9
Reaches you$33
Pay no more than$26
For a 30% return at your costs. Change them and every figure on the site follows.
What it actually sold for
Sealed
$50
2 sold in six monthsUsed
$29
1 sold in six monthsSellers are asking 5% more than buyers actually paid. The $53 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
- 71707
- Theme
- Ninjago
- Released
- 2020
- Status
- Retired Sep 2021
- Pieces
- 226
- Minifigures
- 2
- Retail price
- $19.99
- Value per piece
- $0.232
- Price confidence
- high · 13 listings
- Last checked
- 7 days ago
Where these numbers come from
eBay13 live listingsThe asking price here — the median of what sellers want right now, $53. Last checked Oct 19.See the listings →BrickLink2 completed salesWhat it actually sold for — $50 across six months of real transactions. Last checked Oct 22.Open the price guide →Catalogue226 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $20.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 Ninjago sets from around 2020
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▲ 650% vs retailRetired71708 · 2020Gamer's MarketNinjago · 228 pcs$22521 listings · retail $30Proven performer
▲ 149% vs retailRetired71705 · 2020Destiny's BountyNinjago · 1,783 pcs$32424 listings · retail $130Proven performer
▲ 187% vs retailRetired71704 · 2020Kai FighterNinjago · 513 pcs$11520 listings · retail $40Proven performer
▲ 115% vs retailRetired71711 · 2020Jay's Cyber DragonNinjago · 527 pcs$1074 listings · retail $50Not enough data