How much is Sponge Mortarboard worth? Price and value
As of November 14, 2026, Sponge Mortarboard is worth about 10 Robux, its Recent Average Price (RAP), and the cheapest copy for sale is priced at 4,000 Robux. Across the 10 owned copies, its estimated market value is 100 Robux.
That puts the cheapest copy 39900% above RAP. Sellers are holding out for more than the item has recently traded at, which is normal for a UGC Limited with few copies on the market.
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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How to get Sponge Mortarboard
Sponge Mortarboard is no longer sold by the creator, so the way to get it is to buy a copy from a reseller on Roblox. The cheapest is listed at 4,000 Robux.
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.