I know Skrill can send a refund. I've done it before in the past when I had a partial refund for shipping that was less than expected. I just can't remember how since it's been awhile since I've used Skrill. I offered it in the past on
ebay, but maybe one buyer out of 500 would use it so I don't even bother to offer it anymore.
If Skrill doesn't help and no one here knows then I'm sure someone on the Delcampe forums should know.