Okay so I had one of these offered to me today for my Uberti 357 single action. Can't find a lot of info on them other than they sale brand new for around $300-$350. Look a lot like the old sigmas. Are these any good? I understand there isn't a big market for single action revolvers right now, and maybe I am over valuing my uberti but is this an equal trade? I value my uberti at about $400 by itself and It has a $150 belt rig that I bought to go with it. Am I overpriced? if so what should I be asking or is this trade for the s&w fair?