Ebay,
I used to use Auctiva, but their downtime is during the day for me, so it meant my customers can't checkout for half a day.
It usually works well for me, I have boxers on the same thing, and they relisted instantly, just seems to have taken a thing against this polo shirt.
Its even still in my Auctiva store - The medium red Multi colour
http://store.auctiva.com/bvbargain