I sold an expensive underwear set on well known auction site. The bra had been worn once & knickers never but labels off. It sold for 1/10 of it's original price so absolute bargain. However person who bought them has said misdescribed on ad as the knickers have been washed & I'd put new with no tags!! The said underwear set had been sat in my underwear drawer for about 9 years or so!!!! So admittedly before selling I gently handwashed both items. But buyer is complaining & insisting on refund!! AIBU to think I should have to refund...and cover sending costs to & from buyer! Thank you