This has been covered before here in the Browning forum. Yes, finding any UDX Plus (deluxe grip) model is VERY difficult.
I checked the Gallery of Guns site early every morning for months. Finally, there were five. I bought mine from my favorite LGS.
Had it by noon, since Davidson's warehouse is here at the Prescott airport. The other four Rosewood UDX Plus's were sold by 10 am.
The word is that the Utah factory does "runs" of any given model. And you may wait a long time for "your model run".
As you've found out, if you find "your model", you obviously need to grab it RIGHT NOW.
Here is Davidson's Gallery of Guns site. I've put you directly into the Buckmarks. All are currently "allocated".
Meaning none available, including the model you want. If available, you will get discounted quotes from your LGS's.
www.galleryofguns.com - Gun Genie - Davidson's most popular and powerful search engine to find and buy guns at galleryofguns.com
If you want to check previous threads here, do an advanced search(upper right corner) with my user name.
And here is a great site for ALL things rimfire. Just scroll way down for the Browning Forum
The Buckmark guru's reside here. And, a ton of Buckmark knowledge is in the "stickies" at the top.
RimfireCentral.com - Rimfire Community!
Good Luck !
Here's my UDX Plus with Rosewood grips and cheap Truglo (Chinese) red/green reflex sight.
Sight and Buckmark sight rail for under $100. Gun was $430 plus our 10% local sales tax.
And no, this rig is NOT winning me any trophies in our local club 25 yard "bullseye" matches. I started last year.
Most of "the guys" have thousands in their rigs. And many decades of experience. My rig is better than its owner.