These are available used at around $150-200 (I paid $180 for one last week).
Many great reviews, so I figured I would try another Yamaha integrated.
Back in 1989 my first amp was an AX-500U Yamaha integrated. I used it with some Technics speakers, and later with some Polk and Paradigm speakers. It was university days so volume trumped audiophile interests for sure. As did parties LONG into the night. That amp was often pushed (driving 2 sets of 8 ohm speakers) at high volume for many many hours and although it would get hot, it never gave up.
Fast forward "a few" years and I find myself thrilled with the "new" Yamaha.
I have the A-S500 paired with some very not cheap n cheerful speakers (Focal Electra 906's) and it is a really pleasing combo.
Highly recommended if you are looking for a cheap, reliable, remote controlled integrated that will pair up with MUCH more expensive gear and sound good.