OP, the trend for good bike shops is to have policies that allow you to ride a saddle long enough to see if it works for you, then return it for another if you find it doesn't. One big shop here in Portland allows this as many times as you need to get it right (there many be two weeks per saddle) then get store credit if all fail. Another has a "library", literally, of demo saddles. You pay $25 for your "card". Take saddles out for up to two weeks Do this as many times as you like, no obligation to actually buy one. If you do, the money for your "card" gets refunded.

Ask about policies like this at your shops. If they do not have them, suggest they study the Portland model and "get with it".

Ben