Is that budget just for a receiver? If so and you're in the US this
Denon AVR-4400H at AC4L is a great receiver with a healthy power supply (140w x 2 ch driven). It may not be in the Era you're specifically looking for, but it's a damned fine receiver and I'd love to have one.
The thing about buying used electronics is you don't know how hard they've been pushed or if used for long periods of time. Speakers are okay used in my book but I shy away from those types of electronics. They generally have a shorter shelf life and are more prone to failure.