Hi,
I have a spare A500 keyboard I use for spares with most of the keys left. I think it has all except Esc, F1 and F2. A few have some minor heat damage to the caps, but not many (can't remember which they are offhand). If you'd like to restore your keyboard, let me know what keys you need. I think the A2000 keys are a slightly different colour from the A500 though - mine are slightly lighter (and not due to yellowing - that's just the way they are made).
Also, if you get a new A2000 keyboard and end up with any spare rubber cups, I would be interested in a few since I've swapped keys into my A2000 and A4000 keyboards and had to use springs instead of the lost cups and they feel a little different.
John
