Well, if he hadn't been able to sell them I would say whomever originally asked him to pick up the pair should have been on the hook for the cost. Also, while I don't know much about stubhub, I can't believe that there is a rule there that says you have to sell tickets for a profit, so him selling them for twice face is a bit greedy.
I don't know all the details, other than the other two were for his brother in law, and the person totally stiffed him (tole him to buy the tickets but apparently didn't realize it was $500 for the pair. My buddy may have been an opportunist once he put the tickets on stub hub.
I find it amazing that anybody would pay $250 a ticket. Apparently in a special place in Giants Stadium with tv's in the bathroom, a special closed bar and other nonsense not worth the extra $
May God bless and keep you always
May your wishes all come true
May you always do for others
And let others do for you