uhh...lemme think...i can get a half for i think about 50 if i got the right hookups, so a 1/4 would probly cost me about 25-30 depending on who i get it from. if you've only smoked twice, then chances are you're a lightweight. a 1/4 should probly last you a while. as for the amount of bowls, it depends on the size of the bowl you have. don't worry, though. you're a lightweight, like me, and a quarter should last you a while.