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Welcome to the Hidden Side

Snapshot

vs RRP
+75% over
Per piece
12¢

Value per piece

cost per part at each reference

12¢lowest market value

Reference

MSRP11¢
Used market12¢
New market19¢

Where to buy new

  • AmazonLowest$69.89

New at retail · MSRP $19.99 · via BrickPicker

Set Retired

Welcome to the Hidden Side

Reference
70427-1
Theme
Hidden Side
Year
2020
Parts
189

Welcome to the Hidden Side is a LEGO set from the LEGO Hidden Side theme released in 2020. It is built from 189 pieces.

New avg$34.99Used avg$22.19MSRP$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 $34.99 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 (104)

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

Sticker Sheet for Set 70427-1Photo shows a different color. This lot is (Not Applicable).1×Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small4×Creature Body Part, Barb Large (Claw, Talon) with Clip2×Animal, Bat1×Insect, Spider with Elongated Tail Section2×Bar Holder with Clip4×Lamp Post 2 x 2 x 7 with 4 Base Flutes1×Brick 1 x 13×Brick 1 x 2 x 2 with Inside Stud Holder2×Brick 1 x 36×Brick 2 x 42×Brick Arch 1 x 3 x 2 Curved Top2×Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports]3×Brick Curved 1 x 3 x 2 Inverted [Inside Bow]3×View all 104 →