Mermaid Gabby's Aquarium Adventure (11204-1) is a LEGO LEGO set released in 2025, currently averaging $33.28 used on BrickLink. It comes with 3 minifigures worth a combined $19.64. It may still be available at retail from LEGO or authorized retailers. The full parts inventory runs 54 pieces.
Minifig value: $19.64 out of $33.28 total (59%). Over half the set's resale value is in the figures. Sellers parting this set out should list the minifigs individually on BrickLink. They'll earn more than bundling everything together.
Mermaid Gabby's Aquarium Adventure sells for an average of $33.28 used and $23.34 new/sealed on BrickLink based on 6 months of completed sales. Current retail availability may affect secondary market prices. Actual prices vary with completeness. Missing minifigures or key parts will lower the value.
This set includes 3 minifigures: MerCat ($1.97), Gabby - Mermaid ($9.48), Kitty Jellyfish ($8.19). The minifigures have a combined BrickLink value of $19.64. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.
The minifigures make up about 59% of the set value ($19.64 out of $33.28). Most of the value is in the complete set package, so selling it whole is likely the better move unless you have buyers lined up for specific figures.
Mermaid Gabby's Aquarium Adventure was released in 2025. It should still be widely available at retail from LEGO and authorized retailers.
Use the parts list on this page to check every piece and all 3 minifigures. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.
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