just ask them if you get the license transferred into your name...other than that, don't fu(k w/ it...after they tell you yes, make sure the license is transferrable by contacting the software company for the product ur purchasing...i've bought reason and live off of ebay...both legit....usually if its a crack w/ no license, the seller won't respond to ur question when u ask "do i get the license to the product if i buy it?"....when its legit, they always respond to u..
most times i have a smooth transaction w/ ebay, and every now and then someone tries to fu(k u over...out of all the transactions i've done on ebay since 2003, i've had something go wrong 3 times, so,
good luck and happy bidding...