slippery slope …
if you toss him $10 or $100, you’ve set a precedent that he has a right to getting money back, now stacking the deck in his favor should things go to court.
just like if i walk into YOUR house and injure myself in some retarded way, like slamming a door on my hand, if you say “well the door is heavy, so its sorta my fault” and pay $100 out of my $1000 in medical bills, whats to stop me from taking you to court and saying “its 100% his falt and hes just trying to shut me up with a pitifully small payment”
Cliffs: in for a penny, in for a pound, either refund all of it or tell him to GTFO, its not your fault, and the only reason to refund anything is because “you want to be nice” … but i think waiting for 3+ months is enough nice-ness