Since the band's two story house is basically a private club anyway you start buying bulk beer and locking it up. Selling beer to hangers on at one dollar a bottle. The drummer starts slinging sacks of weed and soon everyone is the group are buying bulk drugs and selling them.
But this leads of stuff getting stolen from break ins. When the books are balanced the band is still making a profit but not much when theft and damages are deducted. You guys are not even getting high for free, just high for cheap.