LEGO Spiders Set (40021)

- Theme
- Seasonal
- Subtheme
- Halloween
- Pieces
- 54
- Retail Price
- $4.99
- Released
- 2011
- Status
- Retired
About This Set
LEGO dropped the Spiders Set (40021) in 2011 as part of the Seasonal Halloween collection — a neat little set at 54 pieces with a retail price of $4.99.
You're looking at $0.092 per piece, which holds up well against other Seasonal sets.
LEGO exclusives like the Spiders Set tend to fly under the radar at first, but their limited availability makes them interesting long-term holds.
Key Features
- 54 pieces — Quick, focused build that's fun without the time commitment
- LEGO Exclusive — Limited distribution that typically drives stronger aftermarket value
- $0.092 per piece — Better value than the Seasonal average
- Halloween subtheme — A popular subcategory within Seasonal
- From 2011 — Modern LEGO design and packaging quality
Investment Analysis
The Spiders Set (40021) still has time on shelves, so don't feel pressured to jump in right away. The smart play with active sets is buying on discount and being patient. Let's break down the investment picture.
Investment-wise, we'd call this one solid.
What works in its favor:
- The $0.092 price-per-piece is well below average — good sign for value retention
- Exclusive to LEGO channels, which limits supply and typically boosts secondary market value
The play here is patience. Set a price alert, grab it when it dips below $4.99, and revisit once it nears retirement. Seasonal collectors tend to pay up.
Theme Background
As a 2011 addition to Seasonal, part of the Halloween subcollection, the Spiders Set slots into the more affordable side of Seasonal. Seasonal is part of LEGO's broader product lineup, and at $4.99 this set is priced accordingly. The $0.092 price-per-piece makes it one of the stronger values in Seasonal right now.
Collectors following Seasonal specifically should note the Halloween subtheme — it's a category that tends to draw attention and hold value, especially as sets in this tier age out of production.