If you used to rely on Wal-Mart to get your CO2 tanks re-filled, you've most likely already discovered they've quit offering this service. In fact, the word is they're going to stop selling paintball equipment altogether. So you might become stuck without a place to re-fill your air tanks; don't worry! Consider this short list of possible places for re-fills...

Paintball Stores.

Paintball is easy to get addicted to; in fact I know a lot of guys who can be considered 'over-addicted'.  Getting over addicted to paintball is both good and bad for a player.  It is good because it shows that you love to play the sport and you'll play it enough to get good; but then the bad thing happens. You start putting money into it that you don't need too; you start overspending every last dollar you've got.