I don't mean to insult you, but if you have been smoking for two years and had to ask this question you shouldn't bother dealing. Get a scale so you can determine how much to put in each bag. We also can't suggest prices, it all depends on what other weed of the same quality is selling for in your area. There is no other way to tell for sure, and I wouldn't buy from anyone who eyeballs my bags. It's ok among friends sometimes but get a scale.

I don't understand how y'all buy. If I told any of my guys I wanted a 25 sack, he would laugh at me. Everything I have ever had has been a g or more. If you can't afford a full gram you go home empty handed. Selling .5 isn't going to even be worth the effort. If you want to sell do it by grams, 1/8, Q, 1/2, Ounces, etc.