if you say sacs the person is most commonly referring to the actual names for the bags...nickel, dime, quarter, half....not by grams...

nick = 1g = $5
dime = 2g = $10
eighth = 3.5g = $15-20
quarter = 7g = $30-40
etc, etc...

you can sell by bags (that way..and obviously measure them out by grams) or sell it *by* the gram. 1g = 10$, 2g = 20$ mids prices unless its just taxed regs.