That is about the price I got mine for. I have been pretty happy with it, plus magazines are still pretty abundant at shows. A mag will run you about $25 or so.
An armoror warned me about the decocker, saying to treat it lightly when you use it. Don't manhandle the thing or it can get out of sync. That is the only concern he had with it. You will need to find an armoror who has taken the auto(specifically the 1076) course if it goes down.
I find it to be accurate on a B 27 and a TQ 15 target, enough to qualify with a perfect score.
It certainly ejects magazines quicker than my 4506, and balances quite nicely in my hand.
Most ammo is going to be weaker than the original 10mm load, so wear and tear should decrease.
I think most of these guns are police trade ins. That said, they should only have several hundred rounds through them. Holster wear should be about the only thing wrong with it. Most cops shoot once a year in qualification, so the gun is probably just broken in.
If worse comes to worse, call Smith and see if they have parts, or Numrich Gun Parts Corp.
If you don't like it, mine is in need of a twin.