What is Sponge Mortarboard worth on Roblox?
As of September 28, 2026, Sponge Mortarboard has a Recent Average Price (RAP) of 10 Robux. Across the 10 owned copies, its estimated market value is 100 Robux.
No reseller currently has a copy listed, so RAP is the only live price signal. Sold-out Limiteds with no open listings only move when a holder decides to sell.
How rare is Sponge Mortarboard?
Sponge Mortarboard is a UGC Limited Hat with 10 total copies. It is sold out at the original price, so copies now trade only on the resale market. It originally sold for free.
Sponge Mortarboard has 183 favorites on the Roblox catalog.
Sponge Mortarboard sales history
RBX Invest has recorded one sale of Sponge Mortarboard, on Mar 10, 2025.
Free claims from the creator are not counted, so these are sales between players.
Did Sponge Mortarboard make money for release buyers?
Sponge Mortarboard sold out of its original stock 27 days after its first recorded sale, on Sep 19, 2024. Copies could be resold from Sep 22, 2024, once Roblox's 30-day resale lock ended.
About Sponge Mortarboard
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Where to find Sponge Mortarboard
Sponge Mortarboard is Roblox asset ID 91177115001167. It was published by zerobeast. On RBX Invest it sits in the UGC Limited Hats, Rarest Limiteds (10 copies or fewer), Limiteds under 100 Copies, Limiteds under 1,000 Copies collections. The RAP, reseller listings, and copy counts on this page refresh from Roblox continuously, so the figures above are the state of the market at the last update rather than a fixed snapshot.