If your not very careful with PayPal. It can Turn ugly fast for the seller.
You always have to set yourself up for trades with any worst case scenario and to be prepared at all times.

If anyone needs help or advise from me on how to fight PayPals chargeback/Dispute. Feel free to contact me.
Maybe I can give you some hope and insight on beating the scammer charge-backs disputes for PayPal.

I hope my Success on winning against this will help the rest