What is Onyx's Birthday Cake worth on Roblox?
As of September 28, 2026, Onyx's Birthday Cake has a Recent Average Price (RAP) of 31 Robux. Across the 30 owned copies, its estimated market value is 930 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 Onyx's Birthday Cake?
Onyx's Birthday Cake is a UGC Limited Hat with 30 total copies. It is sold out at the original price, so copies now trade only on the resale market. It originally sold for free.
Onyx's Birthday Cake has 310 favorites on the Roblox catalog.
Onyx's Birthday Cake sales history
RBX Invest has recorded 2 sales of Onyx's Birthday Cake across 2 trading days, from Aug 22, 2024 to May 31, 2025.
Free claims from the creator are not counted, so these are sales between players.
Its highest daily average sale price was 250 Robux on Aug 22, 2024, and its lowest was 85 Robux on May 31, 2025.
By calendar year, its average sale price went from 250 Robux in 2024 to 85 Robux in 2025, down 66%.
| Month | Average sale price | Sales |
|---|---|---|
| May 2025 | 85 R$ | 1 |
| Aug 2024 | 250 R$ | 1 |
Did Onyx's Birthday Cake make money for release buyers?
Onyx's Birthday Cake sold out of its original stock 7 days after its first recorded sale, on Jun 23, 2024. Copies could be resold from Jul 16, 2024, once Roblox's 30-day resale lock ended.
About Onyx's Birthday Cake
Cake From The Deepest Parts Of Onyx’s Oven; There Lays A Rocky Cake. We Feast On This Cake In Honor Of Onyx’s 15 Birthday. It Might Break Your Teeth, But That Doesn’t Matter. Happy Birthday, Onyx, yayaya.
Where to find Onyx's Birthday Cake
Onyx's Birthday Cake is Roblox asset ID 17878215451. It was published by Onyx's Garage. On RBX Invest it sits in the UGC Limited Hats, Limiteds under 100 Copies, Limiteds under 1,000 Copies, Free Roblox Limiteds 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.