OP, ebay favors the buyer when it comes to disputes, unless the seller knows exactly how to deal with, answer and work within disputes to break even or occasionally win.
And sometimes the best thing to do is to call the buyers bluff and tell them to return and here is a return label.
Your buyer sounds like they have ben bullying sellers for awhile now and have their threats and pattern down. Had you said return at the outset and nothing else and sent them a label, they would have to send back or go away. In my case most go away. I got one now that for two months they have been asking me why I haven't refunded them for their item that arrived broken, my response is always that I am waiting on them to send it back.
You should read the announcements and learn about the punishments that ebay has in store for sellers that aren't keeping up with their accounts. If you have had a couple of disputes and or refunds, then ebay drops you in search and can put limits on you.
I learned a long time ago that ebay is not the place for most of my merchandise so I moved it and now just list on ebay what I can not list on other sites.
Now, don't take this wrong, but your measurements leave a lot to be desired. Such as, your sleeve lengths, is that the inseam? How did you arrive at some of the numbers. And pit to pit does not sound appealing. And it took me three listings to figure out that hem width is not how much hem there is to be let out, but it is the measurement across the bottom opening of blouses and dresses, and I have discovered that that one is really not important.
(*Bleep*)
