Buy a booster pack every fortnight (RM14 a pop), if you’re one a very tight budget. But do it with a group of buddies, for maximum trades.
This was exactly my impression. It's also the reason I think ultimately it will succeed. It encourages trading, by giving you cards that you're very unlikely to need, but the guy next to you wants badly. Unless you have a starter deck for every class to use as a base for collecting useful cards, you'll not get enough cards to really construct a workable deck even out of a booster box, as I have found out. Having a starter or three really makes a difference, as would having a group of friends to play one on one or multiplayer matches with. Out of the box multiplayer is another way I think the game really shines.