In my case I have several chips on ebay, I cannot test all items because I don't have an A500 or A2000 anymore. These were working to the best of my memory before storing them away, I think it's only fair to offer a refund to the buyer within reason.
That way, you don't really have much to lose as a seller because the items are old anyway and the buyer doesn't end up brooding and feeling ripped off.
