A large portion of a set's value is often tied to its unique minifigures. For instance, the Mystery Mansion (75904)
: Features a removable roof and fold-out sides for internal play. Mystery Mansion (75904)
LEGO Scooby-Doo Buying Guide & Market Report The LEGO Scooby-Doo theme was released in 2015 and retired by the end of 2016. Because these sets are no longer in production, they are primarily available through secondary markets like eBay, StockX, and specialized LEGO resellers such as BrickLink or Brick Owl. 1. Key Available Sets & Current Market Values
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