How much is Onyx's Birthday Cake worth? Price and value
As of November 14, 2026, Onyx's Birthday Cake is worth about 31 Robux, its Recent Average Price (RAP), and the cheapest copy for sale is priced at 649 Robux. Across the 30 owned copies, its estimated market value is 930 Robux.
That puts the cheapest copy 1994% 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 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.
How to get Onyx's Birthday Cake
Onyx's Birthday Cake 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 649 Robux.
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, Limiteds under 1,000 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.