Uh. A dime bag refers to the PRICE of the bag, not the WEIGHT.
A dime bag is $10 worth, it doesn't matter what amount you get. You get more if it's shittier weed, less if it's better.
Since I only get 3.5 grams for $60, I would expect at the VERY MOST to receive 0.583 grams of bud. This is assuming you are paying the same rate for a dime bag that you do for an 8th. Usually smaller amounts are marked up more, so I wouldn't expect more than 1/2 gram out of a dime bag. Maybe less.
Where the fuck are you people getting grams of herb for $10?