Hello 'hulkamaniacwheels',
Refunds go back the same way they went out. So in your case it will go back on your card, but it may take a couple days. Call the customer serivce number associated with your card and you can hear all the recent transactions that way to ascertain that you have been refunded.
You should also have received a paypal notice in your regular email saying that your payment has been refunded. That shows up seconds after the refund is issued.