You need to use paypal to order buy something from simon.com, is that right?
I have not checked that but mostly no they won't have paypal as a form of payment.
Just brought an gc from that site a few days ago using an debit card.
You can use paypal plug-in can make a secure card which can be used as a debit card to buy from that site, just to buy the gc. Should be safe...
Giftcard website that takes paypal? 
