Unless there is something really wrong with it, that is a good deal. If you can, test fire it. About the only problem that I have seen is a round from the magazine will not cycle properly into the chamber. This is sometimes the reason price is too good to be true. Shoot about a box of shells, two shots at a time. If it has this problem, that should be enough to show up. The problem is usually with a warped lifter and can be fixed, but it is a good reason to offer $100.00 less. This is not a problem unique to the SX-2 but it happens to some degree in all all autos including the b guns. Good luck.