Where i am from you usually get
$20 1.3
$50 3.5
$90 7.0
$300 28.00

Although that is for the best gear i can get. I can get lots more for the cheaper stuff.

As for the bag you got, it really cannot be judged without the stuff being weighed. The density of the bud in the description makes a huge difference. When i lived in sydney i used to get the tiniest buds that weighed up. I now live in a more rural location and the buds are huge. The difference is mainly due to compression done usually to make it more compact and thus easier to move (and hide lol)