Originally posted by: aphex
Something to keep in mind with those, typically they pre-authorize $1-2 everytime you use it. So if you buy something that comes to say $20 (including tax) and you have a $20 visa gift card, it will deny the charge, since it preauthorized $1 and only $19 was available right that instant. You'll get that $1-2 back, but it sure as hell is hard to use the "whole" card. Freakin PITA.
Originally posted by: Eli
1) You keep track.
2) It is declined.
3) Most places probably won't have a problem with 15$ from the card and 5$ cash, unless it's not possible to do with their register or something.