I agree with much of what has been said, but at the end of the day it's worth what you are willing to pay!
However to give you some idea of value?
I collect Amiga computers for my computer museum. I have several Amiga 2000's is various guises which I have bought off ebay. (A1500, A2000, A2500HD etc) They have cost between £40 and £70 depending on the specification & who is bidding. Check ebay for any A2000 that may be currently for sale. Your friends machine appears to have a Bridgeboard and IBM drive which would push the price up, but no hard drive which will bring it down!
Good Luck
TrevorDick
