I thought I would go and see for myself whether or not pawn shops have quality equipment.
I found the closest one to me (I live and work in downtown minneapolis), and it was is a sketchy neiboorhood. There were people loitering outside the shop, and you can't just walk in; they had to 'buzz' me into the store. anyway, I did not find what I was looking for, a decent reciever. But there was a Onkyo Integra 6-disc changer for $100.
So now I am going to go find a pawn shop in a rich neibohood.