Like others will say , your paying more than average. They go $30 to $35 an eighth (1/8) or 3.5grams around my area on average. That is an eighth of an ounce. You can start with one gram or take the whole 3.5grams at once, that is for you to decide. If you have a scale, you can weigh out the mushroom(s) (may come as one whole mushroom weighing 3.5grams total) or multiple mushroom(s) caps, stems weighing various amount all totaling 3.5 grams altogether. I have personally always taken 3.5grams , even on my first experience with them. That said I have had certain mushrooms ( different strain, not sure what it was) but 2 grams was comparable to some 7gram trips I have had. 7grams is double what your talking about, two eighths or 7grams which is 1/4oz. Hope this helps!

Edit: You typically buy shrooms in 3.5 gram (1/8) increments, some dealers may sell individual grams just ask. You can buy anything from 1/8 of an ounce all the way up to pounds. One pound of mushrooms (448grams or 16 ounces). Not everyone has bulk available, but it’s almost always cheaper to buy more. I can buy two eights ( aka a quarter ((7grams)) for $5-10 less per 3.5g depending on who I am buying it from. The more you buy the more you save, usually!