Coming in at 261 pieces, the Costume Party (42661) is a neat little set from the Friends lineup. It debuted in 2025 at $39.99. The set includes 4 minifigures, adding play and display value.
Price-per-piece sits at $0.153. Not the cheapest, but you're paying for the design and theme licensing.
For the price point, the Costume Party delivers a clean Friends build that's easy to recommend.
Key Features
261 pieces — Compact and purpose-built — great for a quick session
4 minifigures — Adds play value and aftermarket appeal
$0.153 per piece — Standard value for the Friends range
From 2025 — Modern LEGO design and packaging quality
Investment Analysis
The LEGO Costume Party (42661) is set to retire this year, which puts it squarely in the sweet spot for investors. Retail availability is winding down, and aftermarket demand typically picks up from here.
Investment-wise, we'd call this one modest but worth tracking.
Key factors to consider:
The 4 included minifigures give it some extra aftermarket appeal
Bottom line: Friends sets that retire with this profile usually see meaningful appreciation. If you spot the Costume Party on sale, don't overthink it.
Theme Background
As a 2025 addition to Friends, the Costume Party slots into the more affordable side of Friends. Friends is consistently one of the top-performing LEGO themes, and at $39.99 this set is priced accordingly. At $0.153 per piece, you're paying a premium — though that's typical for Friends sets in this range.
The Friends theme has a broad appeal that crosses over between builders, collectors, and investors. The Costume Party fits comfortably into that ecosystem at its price point.
Why This Set Is Special
Part-out value 2.1x retail. The individual parts are worth $83.01 on BrickLink — 2.1x the $39.99 retail price. Exceptional part-out value.
Frequently Asked Questions
[{"q": "How many pieces are in the LEGO Costume Party (42661)?", "a": "The LEGO Costume Party (42661) contains 261 pieces, making it a smaller set."}, {"q": "What minifigures come with the LEGO Costume Party (42661)?", "a": "The LEGO Costume Party (42661) includes a solid complement of 4 minifigures. Minifigures are a key value driver for LEGO sets \u2014 exclusive or rare minifigures can appreciate significantly in value on their own, sometimes commanding high prices on the secondary market."}, {"q": "How much does the LEGO Costume Party (42661) cost?", "a": "The retail price (MSRP) for the LEGO Costume Party (42661) is $39.99 in the United States. Regional pricing is \u00a334.99 in the UK, CA$49.99 in Canada, \u20ac39.99 in Europe. This works out to $0.15 per piece. The higher price-per-piece reflects the use of specialized or larger elements, licensed branding, or premium packaging."}, {"q": "Is the LEGO Costume Party (42661) a good investment?", "a": "The LEGO Costume Party (42661) shows moderate investment potential based on several factors. Friends sets have historically been among the best-performing themes for post-retirement appreciation. As with any LEGO investment, buying at or below retail price maximizes potential returns. Use the BrickBucks price tracker to find the best entry point."}, {"q": "What age is the LEGO Costume Party (42661) suitable for?", "a": "The LEGO Costume Party (42661) is recommended for ages 6+. The build is designed to be approachable for younger builders while still providing an enjoyable experience."}, {"q": "How big is the LEGO Costume Party (42661)?", "a": "The LEGO Costume Party (42661) measures approximately 26.20cm \u00d7 22.20cm \u00d7 6.20cm (W\u00d7H\u00d7D) and weighs 0.34kg. It makes for a great display piece that won't take up too much shelf space."}, {"q": "When will the LEGO Costume Party (42661) retire?", "a": "The LEGO Costume Party (42661) is projected to retire around December 2026. Once a LEGO set retires, it is no longer produced or sold at retail. This typically causes prices to rise on the secondary market as supply decreases while collector demand remains. Check the retirement countdown on this page for the latest status."}, {"q": "Where can I buy the LEGO Costume Party (42661)?", "a": "The LEGO Costume Party (42661) is available from major retailers including Amazon, Walmart, Target, and LEGO.com. Use the BrickBucks deal tracker to find current discounts and the best price available right now."}]
