#42675
Friends
Unicorn Cake Delivery Car
from £8
£0.13/pc
Cat Birthday Party & Tree House
A creative toy building set for cat-lovers
Pieces
321
Minifigs
2
Year
2025
Theme
Friends
Set #
42666
RRP
—
Price history — last 90 days
Lowest price across listed retailers.
Lowest price
Compare prices
Prices at 1 retailers — updated daily. How we track these prices.
| Retailer | Price | |
|---|---|---|
|
LEGO
Best
Official
|
£24
+ £3 shipping
|
Cheapest Friends sets
Cat Birthday Party & Tree House (LEGO set 42666) is a LEGO Friends set with 321 pieces. Compare LEGO prices for it across retailers and check the full price history before you buy.
The best price for Cat Birthday Party & Tree House right now is £24 across 1 retailers — matching the official LEGO RRP of .
Brickheist tracks the price of Cat Birthday Party & Tree House daily and keeps up to 12 months of price history. Right now it's at its all-time low of £24 — a great moment to buy.
Frequently asked questions
How much does Cat Birthday Party & Tree House cost?
The cheapest tracked price for Cat Birthday Party & Tree House is £24, compared across 1 retailers and updated every day on Brickheist.
What is the lowest price for Cat Birthday Party & Tree House?
The all-time low we've recorded for Cat Birthday Party & Tree House (set 42666) is £24. The 12-month price history is shown on this page so you can spot a genuine deal.
Where can I buy Cat Birthday Party & Tree House the cheapest?
Brickheist compares Cat Birthday Party & Tree House across LEGO retailers so you can buy at the lowest price. See the retailer table above for live prices, stock and shipping.