How much is LEGO Cat Birthday Party & Tree House worth?

Set 42666-1 · 321 pieces

$20.40

new / sealed

$13.26

used

-32%

vs $29.99 RRP

$0.06

per piece

LEGO Cat Birthday Party & Tree House (42666-1) is worth about $20.40 new (or $13.26 used) at current secondary-market prices, currently 32% below its $29.99 retail price.

Value history

Value history$20.40▼ -$18.28 (-47.3%)all time

Jul 4New · used (dashed)Jul 25

Track this set’s value

Add it to your collection and we’ll keep its value up to date, free.

Track it free → See offers & details

Blended secondary-market estimates. Not an appraisal or an offer to buy. Compare with another set → · Value your whole collection → · Most valuable sets →