I'd actually like to vote for an option that's not listed here.
Even though I had always thought sounding was a 'squick-no!" activity for me (and me being on the receiving end still sure is!), my partner and I recently discovered that the inside of his urethra is very sensitive (in a good way), so now I've been cautiously curious about sounding, and we'll probably try it out on him in the mid-term future.
So *I* would think it would be great if Eden carried them.
BUT.
Sounding is one of those activities that can go wrong if you don't know what you're doing, and I would say the majority of Eden's customer base is not educated about urethral sounding. I think that it's probably actually better if Eden doesn't stock sounding devices, so that people won't think "hey this'll be a lark!" and try sounding without putting in the proper research. As it is, the fact that it's hard to find sounds means that only people who really want them will put in the effort to seek them out.
So, that's my thought. They're a niche item, probably for good reason.
That said, I'm probably going to be a future customer. (Lawd, I never thought I'd be saying that!)