Paypal Disputes?

[Paralysisâ„¢]

Ok so I sold this guy a method that costed 120$ which he payed and all.

But the minute we were done with the trade we quickly logged off?

I have a feeling he will dispute, How can I not lose the dispute so I can keep my hard earned money

 

[Time To Buy]

I was MMing the trade. He also wants to know what happens once he is disputed. What would his steps be afterward?