25% doesn’t sound outrageously bad to me. I can easily see doing that with things I take to a dressing room in a brick & mortar store, and with mail order you get some things that you wouldn’t even try on, because you don’t know quite what they’ll look/feel like. I recently did that with an S Oliver black label sweater—was all excited to get it, loved the color in the bag, ripped it open, grabbed the sweater, and just said no. The feel was all wrong.
Ps. Please remind me of the maker of your white boots. Also, I hope those boots are among the things you can still wear!