Chris and money
Chris's main income of money comes from his $750 "tugboat" he receives monthly. However it's very obvious chris has little grasp on the value of money through many apparent signs. His parents take $350 a month from his tugboat to pay for various things(covering stuff that Chris needs but wouldn't buy; Petrol, his car insurance, his groceries and any other necessities), this is with good reason because Chris actively wastes as much of his tugboat as possible on luxuries such as Trading Cards, Sex Toys, Porn and Videogames and more recently Alcohol.
Chris is an impulse buyer(he has even called himself one) from his PSN account we can see more than half the games he has bought has'nt even played, yet he has still bought all(emphasis on all) available downloadable content for every game he has purchased.
He also seems to prioritise buying luxuries over any neccessities and thus buys his clothes at discount thrift stores and eats at fast food restaraunts while buying full priced DVD's, games and the like.
Credit Cards
Believe it or not Chris has credit cards. One may think Chris would be terrible with credit cards considering how he spends his money, and you would be right Chris has managed to rack up $2000 of debt on his credit card(s) and has also stole his parents credit cards to use when his were maxed out. It is possible thinks that credit cards are a source of an infinte amount of money he can spend or something that his parents can handle for him.
Being the greedy twat he is Chris pays off these debts with the lowest amount of money possible so he can buy more useless crap with his tugboat.