What is the cheapest current price for LEGO 42666-1?

The cheapest current price for LEGO 42666-1 (Cat Birthday Party & Tree House) is €19.99 at VSR Spielwaren DE, across 42 European retailers we track.

How much does LEGO 42666-1 cost?

LEGO 42666-1 ranges from €19.99 (VSR Spielwaren DE) to €399.90 (LEGO.com NO) across 42 European retailers tracked by BrickPrice.

What's the all-time-low price for LEGO 42666-1?

The all-time-low price for LEGO 42666-1 is €19.99 — and the set is currently at that all-time low.

Is LEGO 42666-1 on sale?

Yes — the cheapest tracked price for LEGO 42666-1 is 33% below LEGO's recommended retail price of €29.99, currently €19.99.

Where can I buy LEGO 42666-1 for the lowest price?

The cheapest tracked seller for LEGO 42666-1 is VSR Spielwaren DE shipping from DE, currently listing at €19.99.

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SET #42666-1

Cat Birthday Party & Tree House

Name: Cat Birthday Party & Tree House
Brand: LEGO
SKU: 42666-1
Availability: InStock

Price · VSR Spielwaren DE€19.99Buy

Rating: –

LEGO 42666 Friends Pets Cat Birthday Party & Tree House

Price Information

Current price

€19.99

vs 6-month low

Lego retail price

€29.99

6.23 ct/brick

Half-Year Low

€19.99

Highest price ever

€48.60

Price is 33% below the initial Lego retail price, a €10.00 discount! This comes down to 6.23 cent per brick.

🎉 Lowest price ever recorded

Add this set to your brickwatch

Price List (43)

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Price · VSR Spielwaren DE€19.99Buy

Platform	Country/Region	Description	Rating	Price	Delivered	Changed	Currency	Link
LEGO.com UK	GB	Cat Birthday Party & Tree House	★ 3.0	£24.99	£28.94	-	GBP	Go
VSR Spielwaren DE	DE	LEGO® Friends 42666 - Katzengeburtstagsparty & Baumhaus	-	€19.99	€19.99	↓ €10.00Jul 25	EUR	Go
Steinehelden DE	DE	LEGO® Katzengeburtstagsparty & Baumhaus - 42666	-	€20.37	€20.37	↑ €0.232d ago	EUR	Go
Joybuy DE	DE	LEGO LEGO Friends 42666 Katzengeburtstagsparty & Baumhaus	-	€20.39	€24.38	-	EUR	Go
Alternate FR	FR	LEGOFriends - Fête d'anniversaire pour chats et cabane dans les arbres, Jouets de construction	★ 2.3	€20.79	€20.79	↓ €5.50Aug 7	EUR	Go
Amazon.nl	NL	LEGO Friends Cat Birthday Party and Treehouse – Toy with 2 Dolls, 5 Animal Figures, Rotating Table, Pinata and Fun Accessories – Creative Gift for Girls from 6 Years – 42666	-	€21.99	€21.99	↑ €1.6027d ago	EUR	Go
Brickmo	DE	LEGO Friends 42666 Katzengeburtstagsparty &...	-	€22.13	€22.13	↑ €0.18Aug 26	EUR	Go
Joybuy FR	FR	LEGO Friends 42666 Fête d’anniversaire du chat et cabane dans l’arbre	-	€22.89	€26.88	-	EUR	Go
Toys4kids12 AT	AT	LEGO Friends 42666 Katzengeburtstagsparty und Baumhaus	-	€22.90	€22.90	May 20	EUR	Go
Goodbricks	NL	LEGO Friends - Cat Birthday Party & Tree House 42666	★ 4.1	€22.95	€22.95	Apr 18	EUR	Go
Proshop AT	AT	LEGO Friends 42666 Katzengeburtstagsparty & Baumhaus	-	€23.63	€23.63	↓ €4.2011d ago	EUR	Go
Mister Bricks	NL	LEGO Friends 42666 Kattenverjaardagsfeestje en boomhut	★ 4.5	€23.95	€23.95	Apr 18	EUR	Go
BrickFever	NL	LEGO Friends - Kattenverjaardagsfeestje en boomhut - 42666	★ 4.6	€23.99	€23.99	Apr 19	EUR	Go
Proshop NL	NL	LEGO Friends 42666 Kattenverjaardagsfeestje en boomhut	★ 3.7	€24.68	€24.68	↑ €0.43Jun 22	EUR	Go
bol	NL	LEGO® Friends Kattenverjaardagsfeestje en Boomhut Set - 42666	★ 3.7	€24.99	€24.99	↑ €4.004d ago	EUR	Go
Mediamarkt	NL	Lego Friends 42666 Kattenverjaardagsfeestje Bouwstenen Multicolor	★ 3.0	€25.99	€25.99	↓ €1.00Jun 15	EUR	Go
KelCha Toys	NL	LEGO Friends Kattenverjaardagsfeestje en boomhut 42666	★ 3.7	€26.75	€26.75	Apr 21	EUR	Go
Playpolis AT	AT	LEGOFriends - 42666 Katzengeburtstagsparty	-	€26.99	€26.99	↓ €3.0011d ago	EUR	Go
Coolblue BE	BE	LEGO Friends Kattenverjaardagsfeestje en Boomhut 42666	★ 4.568.0k	€26.99	€26.99	↓ €1.002d ago	EUR	Go
Coolblue	NL	LEGO Friends Kattenverjaardagsfeestje en Boomhut 42666	★ 4.6134.5k	€27.99	€27.99	↑ €1.003d ago	EUR	Go
Coolblue DE	DE	LEGO Friends Katzengeburtstagsparty und Baumhaus 42666	★ 4.710.2k	€28.90	€28.90	↑ €0.91today	EUR	Go
BRICKshop	NL	LEGO 42666 Kattenverjaardagsfeestje en Boomhut	★ 3.4	€29.99	€29.99	Apr 18	EUR	Go
Intertoys	NL	Bekijk het artikel LEGO Friends kattenverjaardagsfeestje en boomhut 42666 met een prijs van 24,99 euro. De prijs van dit product was eerst 29,99 euro.	★ 2.9	€29.99	€29.99	↑ €5.00Aug 7	EUR	Go
Unieke Bricks	NL	LEGO 42666 Friends Kattenverjaardagsfeestje en boomhut	★ 4.6	€29.99	€29.99	Apr 19	EUR	Go
DreamLand NL	NL	42666 LEGO Friends Kattenverjaardagsfeestje en boomhut	★ 2.3	€29.99	€29.99	Apr 21	EUR	Go
Ottoversand AT	AT	Konstruktionsspielsteine »Katzengeburtstagsparty & Baumhaus (42666), LEGO Friends«...	-	€29.99	€29.99	10d ago	EUR	Go
Universal AT	AT	Konstruktionsspielsteine »Katzengeburtstagsparty & Baumhaus (42666), LEGO Friends«...	-	€29.99	€29.99	10d ago	EUR	Go
LEGO.com FR	FR	La fête d'anniversaire et l'arbre à chats	★ 5.0	€29.99	€35.94	-	EUR	Go
LEGO.com NL	NL	Kattenverjaardagsfeestje en boomhut	★ 4.0	€29.99	€35.94	-	EUR	Go
LEGO.com ES	ES	Fiesta de Cumpleaños y Casa del Árbol Felina	★ 4.0	€29.99	€35.94	-	EUR	Go
LEGO.com IT	IT	Festa di compleanno felina e Casa sull'albero	★ 4.0	€29.99	€36.99	-	EUR	Go
LEGO.com AT	AT	Katzengeburtstagsparty & Baumhaus	★ 4.0	€29.99	€35.94	-	EUR	Go
MediaMarkt DE	DE	LEGO Friends 42666 Katzengeburtstagsparty & Baumhaus Bausatz, Mehrfarbig	-	€29.99	€29.99	Sep 11	EUR	Go
LEGO.com DE	DE	Katzengeburtstagsparty & Baumhaus	★ 4.5	€29.99	€33.49	-	EUR	Go
LEGO.com CH	CH	Katzengeburtstagsparty & Baumhaus	★ 4.0	CHF 34.90	CHF 42.40	-	CHF	Go
LEGO.com FI	FI	Kissan synttärijuhlat ja puumaja	★ 4.0	€34.95	€40.90	-	EUR	Go
Coolshop	NL	LEGO - Friends - Kattenverjaardagsfeestje en boomhut (42666)	★ 3.5	€35.95	€35.95	↑ €0.45Aug 22	EUR	Go
Miravia ES	ES	Lego 42666 Friends - Fiesta de Cumpleaños y Casa del Árbol Felina LEGO	-	€38.49	€38.49	Jun 14	EUR	Go
Pixmania FR	FR	LEGO Friends 42666 La Fete d'Anniversaire et l'Arbre a Chats - Jeu pour Fille des 6 Ans	-	€39.51	€39.51	-	EUR	Go
LEGO.com PL	PL	Kocie przyjęcie urodzinowe i domek na drzewie	★ 4.0	PLN 124.99	PLN 149.99	-	PLN	Go
LEGO.com DK	DK	Katte-fødselsdagsfest og trætophus	★ 4.0	DKK 269.95	DKK 319.95	-	DKK	Go
LEGO.com NO	NO	Kattens bursdagsfest og leketre	★ 4.0	NOK 399.90	NOK 459.90	-	NOK	Go
Wehkamp	NL	Kattenverjaardagsfeestje en Boomhut Set 42666	★ 3.4	Check price →	—	-	EUR	Go

Price History

Lowest price per day, across all tracked shops

Theme

Friends

Year

2025

Parts

321

Minifigs

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Description

LEGO 42666 Friends Pets Cat Birthday Party & Tree House

Details

Titel van set: LEGO 42666-1 Cat Birthday Party & Tree House
Aantal onderdelen: 321
Leeftijd: 6+
Thema: Friends
Gemonitord sinds: January 2026
Released: in 2025
Bouwbeschrijvingen: Download de bouwbeschrijvingen ↗
EAN: 5702017783758
UPC: 673419402125
Shortlink: brickprice.eu/s/42666-1

Best price for LEGO 42666 Cat Birthday Party & Tree House

LEGO 42666-1 (Cat Birthday Party & Tree House) currently sells for €19.99 at VSR Spielwaren DE — the cheapest of 42 tracked European retailers, as of 2026-10-16. RRP €29.99.

That's a 33% discount versus RRP, a saving of €10.00.

This is the lowest price ever recorded for the set since BrickPrice began tracking it.

At 321 pieces, that works out to 0.062 € per brick — a useful benchmark when comparing to similar sets.

Cat Birthday Party & Tree House is part of the LEGO Friends range. Browse other Friends sets and their current European prices on the BrickPrice Friends page.