My other half brought a bridesmaid dress on Amazon from a seller that looked british, was called something as literal as Sallys British Wedding stuff. Anyway it turned out to be a Chinese seller with goods arriving 2 weeks after sale.
Dress was rubbish, nothing like the picture and they tried the same kind of thing, you pay to send it back and we will refund but the cost was ridiculous plus un traceable so who was to say you would ever get the refund.
Amazon were really good about it and in the end we kept the dress (off to a charity shop) and got a full refund from the seller who couldn't see the problem, "I send you label, you post, we being helpful" they said.