It is hard to say with recent occurences. The 92FS does come with 15 rd. magazines in most places. I mentioned this in my above response.
The Blue Book (32nd Edition) reflects a used 100% Inox at $650.00. The new MSR is $795.00. At 98% you drop to $545.00. If it has been fired, then I think it at least drops to 98% or below. (Guess on my part)
I would have to price around and think about it before paying $700 for a used one without warranty. I still do not know what the 92FS500 is? Maybe the 500 adds something I am not aware of. ???
I paid $627.00 for my new Inox in Jan 2010 before sales tax.