When I first got into shoes a few years back, I thought the Mars logo meant the shoes were fake - because I only knew the original version my brother had in High School.
Very happy that these are coming out without Mars.
In addition to checking a sellers feedback on ebay, I also check other things....
Make sure they're not selling multiple pairs of the same shoes. I bought a pair of the Hornet X's on ebay years ago. I didn't understand how common fakes were and didn't think twice when I saw the guy had 3...