Toho size 15/0 seed beads are packaged in 3" tubes, holding approximately 14 grams. There are about 272 beads per gram, a 3" tube holds approximately 3800 beads. Prices are discounted by volume, buy more tubes of the same color and get a deeper discount. If you purchase 7 tubes you will receive a 100 gram bulk bag, which may need to be special ordered, and may take 3 to 5 additional days to ship. Toho beads are made to exacting standards, so you can count on their consistency!