As it turned out, the process of purchasing something with a credit card wasn't anything that might cause an epiphany (at least for Urataros, anyway). He handed the credit card to the clerk, it was swiped, and there really wasn't much else to it except getting the receipt and placing each of their purchases in several bags.

Urataros picked each of these up. "If I'd known we were going to be shopping for two, I would have brought the DenBird. Let's stop and drop these off first, shall we?"