Scammed Out Of $150 - What To Do?

In June I purchased a marketing campaign for $150 that guaranteed to generate $5,000 in sales in the first 60 days, or a generous refund would be offered. At first I believe it said 150% refund but now on the sales page (which I will not link because I don't want anyone being scammed by him) it states an even more ridiculous 1500% refund guarantee.

Now, the claim to make that much money guaranteed should have kept me away, but I wanted to take the risk and see what happened. Big mistake...

After making the payment via PayPal, I contacted the seller with instructions for my campaign. No response...until I opened a PayPal dispute. He told me that once I close the dispute he would get started on the campaign. Fair enough, or so I thought at the time.

A few weeks passed and I did not receive even one SUBSCRIBER to the website that was supposedly being advertised, much less a sale. I requested a simple 100% refund on the grounds of non-performance, as it was obvious this person was not going to deliver the promised sales quota anyway. He refused, beating around the bush by saying he had sent our emails to PayPal for them to "approve" the cancellation of the 60 day ad campaign - as if he would need their approval to simply click the refund button! He was acting like I wasn't letting him finish the campaign . Like a true sucker, I gave in and told him I would allow him to finish the campaign. He said he knows "exactly how long it takes" and would "make things happen for me" - after that, he stopped responding to my emails.

I talked on the phone with a PayPal agent who said that he could get their fraud department to investigate this issue and possibly help me. Unfortunately, they just sent the same email they did before, that after a PayPal dispute is closed, they can't do anything. How absurd! I reported the case to the FTC as well. I don't know what police/courts in his area would be able to do.

I highly doubt after the 60 days is up he'll suddenly start responding again and graciously grant the promised refund. As it turns out, the owner of PaySpree.com has been scammed by the same person and offered me his condolences.

I know that $150 isn't a terribly large amount of money, but PayPal is doing nothing to prevent this scammer from harming others, and will take no action in getting my money back. I don't have much choice other than to count this as a loss, but I'm sure there is something that can be done... Any insights on your part are appreciated!