i did see the damage on the fish. however, there isn't a sign on the fish that says "yea, i'm gonna die soon, don't buy me". i have "rescued" damaged fish be4 and i take the owner's opinion on the fish's condition into consideration too. i had a beat up festae be4, and it made good recovery just as the owner said it would.
so when i saw the damage on the tig, yes, it was considerable damage, but i couldn't tell whether it's a goner or not. it did look to me like damage that can be recovered w/time. and when i was in doubt, i did check w/the seller for the fish's condition. he told me that it's healing alrdy and eating well, and just w/a little tlc, it'll make a full recovery. da's how i decided to buy it.