I *think* that Specialized's online store will accept returns on saddles. I'd say be very careful with them. Don't scratch the rails, stuff like that. I will say that the Ruby required a significant breaking-in period (my sit-bones were SORE!). Now, I absolutely love it. It's a good racing saddle, and I can do long rides (but none of the ultra-endurance stuff) no problem. It's much stiffer than the Jett (not as flexy or cushy), so for me, it is a lot less chafing. Of course, I already knew what width to get by then. I do think that the thinner side profile helps too. I know lots of ladies with Jetts who like them. I have the 06-07 type, but the newer version (08) is much nicer. They got rid of some weird seams and stuff.

Maybe email their customer service before you order one to try to make sure their guarantee applies to saddles? Did you look at the dealer's stock bikes to see if it's on one of them? Maybe you can borrow the saddle from a Ruby bike or something to try in the store or take the bike for a test ride.

FWIW, my bike came with a 143mm Avatar, and boy did it suck. I think most of it was the width issue, and it's hard to find the 155mm men's saddles in stock in stores. In overall design a couple years ago, I didn't notice much difference between it and the Jett, but the cutout may make all the difference for some people.