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Kai's Mech Jet

Snapshot

vs RRP
+130% over
Per piece
15¢

Value per piece

cost per part at each reference

15¢lowest market value

Reference

MSRP8.8¢
Used market15¢
New market20¢

Where to buy new

  • AmazonLowest$70.21

New at retail · MSRP $19.99 · via BrickPicker

Set Retired

Kai's Mech Jet

Reference
71707-1
Theme
Ninjago
Year
2020
Parts
226

Kai's Mech Jet is a LEGO set from the LEGO Ninjago theme released in 2020. It is built from 226 pieces.

New avg$45.95Used avg$33.66MSRP$19.99

Avg. 3rd-party market prices via BrickPicker, not CollectORbuild seller prices

See full valuation & price history →Track its value free →
Value historytracking since Jul 28, 2026

Currently $45.95 new. We just started tracking this set’s value. The chart fills in as prices are re-checked over the coming weeks.

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Parts in this set (116)

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A peek at the pile. See the full list, grouped by color, on the parts page.

Sticker Sheet for Set 71707-1Photo shows a different color. This lot is (Not Applicable).1×Brick Curved Inverted 2 x 2 x 2/33×Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GratePhoto shows a different color. This lot is Black.4×Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom1×Game Controller / Weapon Hilt with Red ButtonsPhoto shows a different color. This lot is Black.1×Headwear Accessory Plume / Feather / Ponytail1×Hips and Black Legs with Silver Belt and Knee Wraps with Lime Circles PrintPhoto shows a different color. This lot is Black.1×Minifig Neckwear Armor Double Shoulder Pad with Scabbard for 2 KatanasPhoto shows a different color. This lot is Black.1×Plate 1 x 62×Plate 2 x 61×Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)1×Bracket 1 x 2 - 1 x 24×Bracket 1 x 2 - 2 x 42×Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]2×View all 116 →