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.
Some mods might think that if they let you go freely you might PM spam people about you account sell.
By the unofficial rules of BTCtalk selling accounts is discouraged. And I think that sell default trust accounts is 100x more discouraged