I would need to see and feel them in person but often the quality of the brass has an impact on pricing

See if they give a weight. That will tell you if the Rohl is a heavier gauge or not.

I don’t know whether there is much, if any, difference in the quality of these specific products. But I can tell you that, in my experiences over many years, the differences in pricing of plumbing items often have little to do with differences in quality, and a lot to do with marketing. Even if there were a difference in the quality of the brass — which I doubt — it couldn’t begin to account for the huge price spread. Also, the fact that the pricier one seems to have fewer and poorer reviews may tell you something.

I'd check to see if one is plated and the other is solid brass.