ur right and wrong at the same time... he has to lie, if he says that he received the software for 1 month, and then they took it back, paypal can say that he received it, what happened later is non of their bussines... believe me i got scammed selling wow account too... for more than 300€ and i have opened like 10 emails to them, there was just 1 auto reply to me, they just dont care, BUT he is the buyer, in my case they were buyers so i had like 0.1% chance of getting money back cuz i didnt do any screenshots and things like that, but even with that they just wouldnt bother ..well fuck it i say, lesson learned, im now more careful
You must be careful to who you are selling. Look at itraders, posts and from how long he is active to this community before you sell or buy.