In my travels, $400 would be a good price, for a 99% (fired but absolutely no visible wear or damage) condition gun.
Extras like magazines, orig box, factory stuff inside, etc. Might add a few dollars.
This for a FTF deal, an interweb gun carries shipping and transfer fees, which are actual n unavoidable costs which add to the actual price, and decrease value of the deal.
A LGS has a couple with light wear on grips and sights, but zero damage, for slightly less. Still a very good deal for a lifetime 22 pistol.