Did I just get scammed? Help would be appreciated

So this guy came up to me and offered me a ridiculous price for 7m 07scape gold. He paid about $150 for all of them through Paypal.

He said he'll pay through gift but then after the transaction is done (he keep on asking to buy more and more and more for higher prices), I realized he paid me through a business transaction which I am the seller of a product.

So yeah, I think he paid me through shipped product and right now I have marked the payments he paid to me as 'Already shipped'. Will he now dispute the fact that he did not receive his payments?

I am fucked on a whole new level.

 

I THINK. Key word, I think, he would need some form a receipt to prove he actually bought an item. From what I recollect PayPal doesn't deal with any form of intangible goods in terms of protecting them. So the fact he bought online gold AND the fact he doesn't have any form of a receipt might not allow him to recover it, even if he tried.

Then again, I've had PayPal lock 150$ and remove it from my account because "It was a security risk that I hadn't logged in for a month." So, PayPal isn't the most trusted site in my opinion. But yeah. Hopefully he won't recover it.