Oh I see. However, the money would never show up in the account then. I was thinking they'd somehow fake the payment, so the deposit would show up in the account, but then when PayPal realized it was fake, they'd withdraw the money. I guess the scammers are counting on people not checking their accounts for 4-digit $ deposits.
I also wonder how legit-looking the email headers would be.
I'm almost tempted to send a paypal money request just to see what the result would look like, but I don't want to provide my contact information to the scammers.