I played a 2014 Fender Am. Std. Jazz through an MB500 for years and it was great. My backup was a Squier VM Jazz and that sounded and felt good too. The Player series is somewhere in the middle of the two and if it felt good - definitely buy it rather than taking a gamble on a used one just to save a little over $100.
I played a Player P and ended up taking it home from GC and a PBass isn’t even my daily type of bass. That one just played and sounded really good.
Yeah you’re right, not a big price difference on the used one and who knows if it is anything like the new one? Not a good gamble like you said. Good ti hear the jazz sounded good with the MB500. Gonna gave to play around with the EQ for sure.