Since this board is geekcentric, I thought it best to start here.
My son is getting into Magic; he has this awesome student teacher who taught him & his friends how to play and has a "gaming club" at his house on the weekends. I know that sounds creepy, but it's really not. You'd have to know Mr. B. - he's this really incredible geek lord who is also really kind and gentle with the kids. We love him.
Anyway. Do you have to invest a lot of $$ in the game to get a good deck? Can someone just buy their way into having an awesome, invincible deck by buying a whole bunch of powerful cards? I'm guessing no, because if that were true, the game would've died out by now.
How much of an investment does this need to be? Will son be able to compete or at least have fun on his allowance of a few bucks a week and a free pack supplied by his parents once a while?