>i want to become a dealer of illegal things
selling drugs is very easy and since your customers are addicted you will make money no matter what and you don't even have to do anything except for taking the risk and, well, actually selling of course
just buy cheap, hide well or even better, store at someone else's place (like gf), and make very clear that you don't sell small amounts, you don't want the broke narkomen begging you to move your ass to sell them stuff for a few cents
they will nag you anyway because they are addicted, but as long as they don't bring 50 euros, keep telling them to fuck off