If a users first posts are high quality, he might get whitelisted fast. I do this in my local board since I became moderator.
My first posts are all high quality. The posts of my main account are high quality.
I don't participate in any of the local subs from my main account though.
You are a selling an account on DT, thats not high quality, thats just a regular ass trading thread. By that logic any trader that paid a few satoshi should be whitelisted.