He looks at the card with interest, as it has an intriguing design. Several shades of light blue and orange make the card look very precious and very cheap at the same time, but somehow still overall lovely.
He got out the card terminal, dialed in the price for the two burgers plus a 50% tip and laid the card on top of the terminal. The payment arrived immediately without a security code needed to get entered.

"Alright, everything done. I hope, you'll continue to have a pleasant stay in TSP. You may come back anytime, whenever you feel like it between your adventures", he said to the customer and smiled.