What is Birthday Sponge Mo worth on Roblox?
As of September 28, 2026, Birthday Sponge Mo has a Recent Average Price (RAP) of 27 Robux and the cheapest reseller listing is 9,889 Robux. Across the 25 owned copies, its estimated market value is 675 Robux.
That puts the cheapest copy 36526% 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 Birthday Sponge Mo?
Birthday Sponge Mo is a UGC Limited Back Accessory with 25 total copies. It is sold out at the original price, so copies now trade only on the resale market. It originally sold for free.
Birthday Sponge Mo has 116 favorites on the Roblox catalog.
Birthday Sponge Mo sales history
RBX Invest has recorded 2 sales of Birthday Sponge Mo across 2 trading days, from May 25, 2026 to Aug 14, 2026.
Free claims from the creator are not counted, so these are sales between players.
Every recorded trading day averaged 140 Robux.
| Month | Average sale price | Sales |
|---|---|---|
| Aug 2026 | 140 R$ | 1 |
| May 2026 | 140 R$ | 1 |
Did Birthday Sponge Mo make money for release buyers?
Birthday Sponge Mo sold out of its original stock 40 days after its first recorded sale, on Jul 26, 2025. Copies could be resold from Jul 16, 2025, once Roblox's 30-day resale lock ended.
About Birthday Sponge Mo
ZB X SANTI card code: coolbirthdayssss
Where to find Birthday Sponge Mo
Birthday Sponge Mo is Roblox asset ID 134146945853479. It was published by zerobeast. On RBX Invest it sits in the UGC Limited Back Accessories, Limiteds under 100 Copies, Limiteds under 1,000 Copies, Limiteds under 10,000 R$ 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.