I was lucky enough to find a brand new A500 all by itself on the shelves of a Montgomery Ward store (before they went out of business around here) and managed to talk the store manager down to about the same price as yours IIRC. I thought about just keeping it minty fresh in the box, but then said, "what the heck, I should get good use from all my Amigas instead of just keeping them in boxes", so it is in use today with an A530 from GVP attached to it. If anyone has or comes across the PC286 card for the GVP enclosure, please let me know.
