answer: #Person2# is afraid of #Person1# being cheated by others of #Person1#'s credit card number.
documents: #Person1#: Oh, please! Don't be so old-fashioned! It's totally safe.
  #Person2#: I sure hope you didn't trust anyone with your credit card number.
  #Person1#: All I did so far was make a bid on the Buddha. It was easy!
  #Person2#: Easy? Ha!! It was easy for them to cheat you!!
  #Person1#: Oh, come on! I just gave them my e-mail, my address and my phone number. And my name, of course.