Its extremely hard to grow weed if you dont know what you are doing. You can grow tobacco much easier but do people do it? no. In places like Amsterdam it is $60 for 60 grams, an eight of weed in the US is roughly $25, and an eight is 3.5 grams. 1. In this day and age, anyone can find out how to grow weed, not necessarily good weed, but they can do it. Not only that, people have been so successful in cultivating pot, that it has outsold corn and wheat in the US. (Source 2.Im moving to amsterdam, jk. $25 for an eighth of weed ( probably mids) isn't to bad considering its ILLEGAL and a black market item.