There is no "Mint" according to eBay. Its either "New", "New (Other)", "Like New", "Used", "Refurbished", "Broken/Parts" or something along those lines.
Anything listed with condition such as excellent, mint, very good, etc. is all conditions described by the seller. Everyone has their own interpretations of what is mint, very good, etc.
IMO it's just not smart to offer used photo gear as 'like new', 'mint', etc. There are just too many people who are looking for new gear at used prices.

