I was just making this point very clear to some one earlier which did not seem right to me and should not to anyone else for this very same reason!
I have seen and almost been part of these type of scams in the past when it comes to using paypal.
It is just so easy for them to conduct doing a scam to anyone who is not familiar with how paypal handles their customers received funds.
And this is the sole reason why they will allow these scammers to continue to get away with stealing funds from you and anyone else for that matter.