there are only perhaps a couple dozen or so Gen1 Glock 19s in private hands in the US and they sell for thousands and thousands when and if one ever comes up for sale. You could have bought a brand new Glock for less than that. Yes you paid too much. I bought a new Gen 4 19 for $499. Never buy panic priced guns. If someone told me with a straight face they are asking $600 for an old 19, I’d never consider doing business with them again.