DSF

Ebay calculate their fees based on the selling price not including postage.

I'd do the same

I dunk and have never lost one yet, I never did but the inks kept on merging with each, it solved my problem so I contuine. I do dunk them in warm water, whether this makes a difference I've no idea but it works for me, since then the ink stop mergeing. I just might be lucky.

Yep I have always dunked the mugs in warm water and they have been fine. If one does happen to crack then at least I know its probably a faulty one and could have cracked when the customer used it.