Question about selling

Um, I am new to this site. I would like to ask if it allows selling products for a specific game (League of Legends for example). For example, I have a script for LoL and I want to sell it to people, am I allowed or is it against the rules of this site? Thanks a lot

If your script isn't cracked then yes.

And how do I arrange the transaction? I mean, by just saying the client to send me some bucks to my paypal, they can ask for a chargeback anytime, still keeping the script.