I thought we were done with all that, why wait so long to complain about it?
Go with option 2 please DuD to keep it simple. I'd say option 1 if this complaint had been made weeks ago but everyone accepted it at the time and I'm not dragging it all back up.
I don't agree at all with going by whatever price he's at now (if it's any different). Go by the price you actually paid.
Mates rates IS a thing, most managers here seem to be ok with it. I would definitely offer discount for any N-E members buying my players (and have done in the past - I think I sold a youth to 64s that I actually lost money on lol).