its so funny how you guys talk about taking DMT in mg's, we just rack up a cone and smoke it...
think with DMT its better to have to much then not enough.. you really want to make sure you do a complete breakthrough, not a half hearted one. if you dont breakthru it almost seems like a waste cos you dont get that much of an effect... if your a weed smoker, have a few first to take the edge off, DMT is one of the most strongest, intense experiences you'll ever have, and if your not ready it could be a little scary....
i don't know about the trip lasting 20min, more like 10min but it feels like a life time your away. make sure you have a spotter to take your smoking apparatus away when you take a hit, because the effects are literally instantaneous!!!!!!!!!!!
i can understand the pp about you being in a dream and its over, but DMT is one of those things that you need to do a couple of times to really understand it... no two experiences will be the same, ever!
anyhow, i hope you give it ago, don't worry about the money, its worth every cent!
good luck and safe returning