if you want to eye it out, why dont u just pack out bags that if you baught for 5$ or 10$ you would be satisfied with it.

cause if you would be satisfied with the bag, chances are your customer will be too, but as a rule of thumb...
"regs" "brick" "shwag" (pressed low quality weed w/ seeds) - 2.0 - 3.5 for 20$
"Hydro" or "dro" - 1.5 - 2.0 for 20$
"Exotics" "kind bud" "dank" - 0.8 - 1.2 for $20

thats what the prices are in NY suburbs if you have a scale