i have 50, because im trying to buy weed so whenever i see a kid i know i ask him. normally they look at me like im an idiot, but if someoen says they have some ill be ready
$100 or less. All my transactions go on my 529 Fidelity MC card, which is paid off at the end of the month. Gas, food, appliancies, internet, expenses ....
The card pays points each month towards a college fund and costs me nothing.