Mark
They can't take a PayPal payment, for them to turn that payment into cash they have to deposit it in a bank account registered with PayPal and then PayPal can and will hunt them down. The reason PayPal will hunt them is PayPal will be out the money after the payer disputes the charges with the payer's credit card co. So, even if your PayPal payment went through, you'd have months to dispute the charges and get your $$ back (assuming you funded PayPal with a credit card).
This particular scam ring puts the PayPal logo in for legitimacy and to attract buyers, then has to try to switch the payment method at the end, as they can't get away with accepting PayPal. Again, as long as you fund PayPal payment with a credit card you can never be scammed or stolen from.
Kevin