Hmm I get your point but your sooo wrong. I've got every car, plane, helicopter, tank and apartment I need and want and I didn't buy a single shark card... you can make 500K in one weekend if not more easy. you just need a good team and tackle the co-op mission in hard mode to get that cash and rp bonus. Also remember to sell a car from time to time (sell ballards and sentinals to get 9k each time) bet cash on races you know you can win (same goes for death matches and jumps).