Yeah it would be nice if they would just buy them back if they're not bound. I made an oops the other day buying healer stuff out of habit for my bard retainer. It would be nice to just be able to resell it and get the tomes back if it hasn't been used. I ended up turning it into GC seals, but I still had the take some time and get the tomes back so I could buy the bard gear.