I don't really know how to advise you. Yes, the price seems somewhat high.....they're about as plentiful as hens teeth,.....but, if you buy the .357 new, rent the reamer, mail it back and forth, do the work, etc.....it could be worth it if it is in good shape. Also, if it is a 158 with the lighter barrel, that's a plus too. I'm a greedy old S.O.B., I'd probably buy it. I know one thing, I would cut the barrel. I've done it and love it. If you think about it, the .38, mag and Maxi are pistol rounds, and a shortie Handi is still 3 times as long.
Good luck, you'll toss and turn with this tonight...I know I would. If ya don't buy it, pm me the Pawn Shop's phone number

Pete