Several years ago, Mark's here in B'ham had one of the PC Shop 625-11 new for ~$950. It is basically the 625-10, which came with a shorter .45 ACP SS cylinder and 2.1" barrel. It had '45' & 'ACP' in two lines, the barrel was so short, while the 625-11 had '45' & 'CLT' in two lines. The 625-10 has an alloy yoke - I am not sure about the 625-11. It appears to have the SS cylinder - lengthened for the .45 Colt. Weighs 25 oz. Came with the short wood grip, which would reveal a lanyard pin, and a regular rubber grip in a locking PC case.
A friend bought the 625-10 new some years back. It was after it's '03 SHOT Show intro, of course, but not by much. He brought it to the range once - tried gloves - and decided it was 'too much' with just 230gr ball ammo. I saw it in the pusher's used case for $525 - left to ponder it - came back in an hour to get it and, of course, it was gone. The same thing happened with the 615-11 - I wasn't intended to have either, I suppose.
One thing to consider - other than the 25 & 625 Mountain Guns, S&W hasn't made a .45 Colt since the Heritage series in '01. It will likely kick a bit, even with 'cowboy' plinker lead. With Blazer 200gr high speed Gold Dot (1,100 fps) rounds, it'll likely look like a flamethrower. The Speer 250gr low speed Gold Dots (Speer #4484 bullet), you'll likely be better protected - but I bet it's a handful.
I'm guessing, in today's market, it could run from $500-$800 in good shape and be considered fair. Good luck!
Stainz