Thanks guys! My thinking is, selling a saddle would probably be easier than selling a cart. And I think this tack dealer knows someone who wants a cart, so that's fueling her offer I'm sure. I'm leaning towards the show saddle- that is closest to my asking price for the horse cart. I'd hate to get that roping saddle, and then want to sell my Rocking R roping saddle.
As it is, I have 2 saddles and only one horse to ride. Soooo.... if this trade goes through, I'll be selling a Corriente saddle... unless I like it a lot. Then I'll be selling a different saddle. Lol.