I'm not sure if PayPal can recharge you or not but I suggest that you do NOT sign for a package from BFL if you have received a refund. Not only is it dishonest, but you may end up paying for a worthless product.
Oh definitely. I thought that was pretty well understood, but I suppose I should have said it just so it's explicit. If BFL has to prove you received the item to get the money out of PayPal, that requires your signature for the package. At that point they're entitled to their money, and you're on the hook for the bill.
Looking at the PayPal TOS:
11.2 Reimbursement for Your Liability.
In the event that you are liable for any amounts owed to PayPal, PayPal may immediately remove such amounts from your balance. If you do not have a balance that is sufficient to cover your liability, your remaining balance (if any) will be removed, your Account will have negative balance up to the amount of your liability, and you will be required to immediately Add Funds to your Balance or reimburse PayPal through an alternative method. If you do not do so, PayPal may engage in collection efforts to recover such amounts from you.
So basically, if they ship anyway and you sign for it within the 40 day window, PayPal will take the money out of your account (if it's there) and if not start hounding you with collections calls and ultimately sell the debt to a collection agency who will be no fun to deal with at all.
So tl;dr -
If they ship, don't sign and refuse the package.
