How much is The Birthday Anomaly worth? Price and value
As of November 14, 2026, The Birthday Anomaly is worth about 100 Robux, its Recent Average Price (RAP). Across the 10 owned copies, its estimated market value is 1,000 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 The Birthday Anomaly?
The Birthday Anomaly 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.
The Birthday Anomaly sales history
RBX Invest has recorded 2 sales of The Birthday Anomaly across 2 trading days, from Jul 28, 2026 to Sep 20, 2026.
Free claims from the creator are not counted, so these are sales between players.
Its highest daily average sale price was 550 Robux on Jul 28, 2026, and its lowest was 500 Robux on Sep 20, 2026.
| Month | Average sale price | Sales |
|---|---|---|
| Sep 2026 | 500 R$ | 1 |
| Jul 2026 | 550 R$ | 1 |
Did The Birthday Anomaly make money for release buyers?
The Birthday Anomaly sold out of its original stock on its first day of sales, Jun 19, 2026. Copies could be resold from Jul 19, 2026, once Roblox's 30-day resale lock ended.
About The Birthday Anomaly
Opens: June 20th Price increasing by 180 in 24h I set out to celebrate another year and somehow slipped into a place that mirrored our own. Before I found my way back, I recovered a curious counterpart to a relic many thought unique. [Purchase this item for 619 using the link below!!] https://www.roblox.com/games/128549457089522/Action-Enterprises-UGC
How to get The Birthday Anomaly
The Birthday Anomaly is no longer sold by the creator and no reseller has a copy listed right now, so it can only be bought once a holder lists one.
The Birthday Anomaly is Roblox asset ID 105829281692208. It was published by Action Enterprises. 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.