I don't know a whole lot about ultrasonic cleaners.
That being said, I often suspect that a lot of stuff like ultrasonic cleaners, and scales and things like that are branded by reloading equipment manufacturers (who don't actually manufacture this stuff) and the price is significantly increased because their name is on it. In other words, in my uneducated opinion, I think that if you can find an ultrasonic cleaner somewhere other than from a reloading equipment manufacturer, I am sure it would work fine: there is nothing "gun specific" about an ultrasonic cleaner.
Here in the US, we have a chain of stores called Harbor Freight. They sell mostly low end, cheap, Chinese made tools under brand names such as "Pittsburgh", "Chicago"........... While they are sold in Pittsburgh and Chicago, they are Chinese manufactured and the names are a poor attempt at making you think they are quality tools. Anyway, they sell an ultrasonic cleaner and I know quite a few people who are using them to clean brass and according to them, they work great.
For years, I have used an ultrasonic cleaner branded by Hornady for brass cleaning. It also works great but I wanted a larger one to clean suppressors. In particular, I wanted one that was big enough to hold something about 12" - 13". I looked at Amazon and didn't see anything that was reasonably priced that was that big. I ended up buying a Lyman 6000 not because it had the brand name of a reloading equipment manufacturer but it happened to be the only one of that size that I found reasonably priced. I originally had no intention of buying one from a reloading equipment manufacturer.