Yeah an oz can be anything from 32 to 28 grams, depending on who you buy it from. It's usually about 30 around these parts...... Just break it down from there... qaurters are 7 to 8 grams 1/8's are 3.5 to 4 grams 1/2's are 14 to 16 grams And nickels, dimes and dubs are pretty much whatever they give you..... or what looks like 5, 10, or 15 bucks worth regardless of weight...... ................Grow your own so you never get shitted