[owenmarshall]

> But if I only supplied a token. with a value I determined I would not have to worry.

You mean the username and password for the site you've logged on to? ;-)

[thaumasiotes]

No, your credentials don't have a defined monetary value.

A temporary card number can be configured with a fixed value you specify; most banks provide the service for free.

You can also buy a Visa or AmEx gift card, and use that.