I ordered a set of knickers from PBK and got the wrong size (my fault - I ordered the wrong size).

Has anyone here returned or exchanged something with PBK? How is it dealing with the exchange process from here in the USA? Is it a headache? Really slow?

I'm wondering if it would just be better to order another set of knickers and try to sell the too-small set on eBay at a loss, and just call it a learning experience. Next time I'll be 100% sure of size before I mail order clothing from across the pond.