I've had a bag up for sale for a really long time now, and it's just not moving...frankly, I'm getting really sick of listing it. I recently got offered to do a 'trade' by someone with 100% positive feedback for another bag (that I happened to really want), but I have no idea how this would work. We aren't close to each other, so we'd have to ship them...anyone do this before? any tips would be helpful. thanks!