It takes me about 1 business week to finish off an 1/8th of PURPLE HAZE DRO (ITZ ONLEY GUUD IF ITZ DRO AND ALL PURPZ = PERPUL HAYZE OK?) so I'd say 2 days for 1.5 grams, if I did the math correctly. But that's me. What about you?! If I were you I'd just buy like you normally do...