just tried it out to see how it works:

Payment Information
Status:   Waiting for your funds...
Total Amount To Send:   154.19802029 XVG (total confirms needed: 5)
Received So Far:   0.00000000 XVG (unconfirmed)
Balance Remaining:   154.19802029 XVG

(here is the Wallet QR code pic)


Send To Address:   D5zdi3ksR4nW61FEnYBQsWQvR7CPtikBGg
Time Left For Us to Confirm Funds:   59m 3s
Seller:   MG Billing Limited (96%)
Seller Email:   cryptopayment@probiller.com
Leave Feedback:   You will be able to leave feedback once this transaction is completed.
Payment ID: ***********************


154 XVG about 12.30 USD right now vs. 9.99 USD with Credit Card. Sounds fair having in mind that Creditcard might have some additionally processing costs added for the CC Holder.