How much is The Onyx Underkeeper worth? Price and value
As of November 13, 2026, The Onyx Underkeeper is worth about 107 Robux, its Recent Average Price (RAP), and the cheapest copy for sale is priced at 95 Robux. Across the 500 owned copies, its estimated market value is 53,500 Robux.
That puts the cheapest copy 11% below RAP. RAP averages recent completed sales, so a listing under it means sellers are currently asking less than the item has been trading for.
How rare is The Onyx Underkeeper?
The Onyx Underkeeper is a UGC Limited Hat with 500 total copies. It is sold out at the original price, so copies now trade only on the resale market. It originally sold for 95 Robux.
At 107 Robux, RAP sits 1.1x the 95 Robux it first sold for.
The Onyx Underkeeper has 96 favorites on the Roblox catalog.
The Onyx Underkeeper sales history
RBX Invest has recorded 651 sales of The Onyx Underkeeper across 110 trading days, from Feb 10, 2024 to Nov 10, 2026.
Sales here include copies bought from the creator’s original stock as well as resales between players. Free promotional claims are not counted.
Its highest daily average sale price was 199 Robux on Oct 27, 2025, and its lowest was 70 Robux on Apr 10, 2024.
By calendar year, its average sale price went from 91 Robux in 2024 to 100 Robux in 2026, up 10%.
| Month | Average sale price | Sales |
|---|---|---|
| Nov 2026 | 95 R$ | 1 |
| Aug 2026 | 95 R$ | 2 |
| May 2026 | 95 R$ | 1 |
| Apr 2026 | 95 R$ | 1 |
| Jan 2026 | 112 R$ | 2 |
| Dec 2025 | 147 R$ | 1 |
| Oct 2025 | 131 R$ | 3 |
| Aug 2025 | 95 R$ | 4 |
| Jun 2025 | 118 R$ | 5 |
| Apr 2025 | 105 R$ | 2 |
| Mar 2025 | 103 R$ | 4 |
| Feb 2025 | 96 R$ | 7 |
Did The Onyx Underkeeper make money for release buyers?
The Onyx Underkeeper sold out of its original stock on its first day of sales, Feb 10, 2024. Copies could be resold from Mar 11, 2024, once Roblox's 30-day resale lock ended.
Bought at the original 95 Robux, a copy had no profitable resale point in its first year once Roblox's cut is taken out.
About The Onyx Underkeeper
Cold as the steel that covers his towers walls. He doesn't know how long he's been in the depths of his tower nor if time has passed at all. When an Underkeeper becomes restless from their oath, they tend to do an assortment of odd things. This one likes reorganizing the furniture in every room two times a day, give or take.
How to get The Onyx Underkeeper
The Onyx Underkeeper 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 95 Robux.
The Onyx Underkeeper is Roblox asset ID 16304241223. It was published by [ [One[]Pixel] ] - studios. On RBX Invest it sits in the UGC Limited Hats, Limiteds under 1,000 Copies, Cheap Limiteds under 100 R$, Limiteds under 500 R$ 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.