DS was given a Lego set last year it was a large and expensive one. He has autism and the set was related to his special interest at the time. The interest changed quite soon after and it wasn’t used, it just sat in cupboard for months. I encouraged them many, many times to do the set but they wouldn’t. I’ve let the sell the set for half of what it was paid for so they can get themselves something that will be used.
The gift giver has found out (sibling is a blabber mouth) and isn’t happy, they spent time, effort and a fair amount of money getting the set and they feel he’s been ungrateful not building it and selling it. Was I being unreasonable in letting them sell this gift?