Almost everyone who wishes to sell their account will use an alt account to do so.
Bullshit. That's just your mentality since you live in the world of alternate accounts.
I see many people selling accounts using their normal accounts, and no one is leaving them negative trust.
If people want to use a throw away account, it almost always means they are looking to scam and not have the negative trust affect their main account.
There are a number of very reputable users who trade (or have traded in the past) forum accounts, and most of them use a throwaway account to conduct business in the forum account market -- this is even true for a few people on DT level 1.
The vast majority of accounts that are used to buy or sell a forum account are very new accounts, and the people who use a "main" account to trade accounts are the minority.
Even you have left negative trust for people in the past because they sell accounts
I don't see anything suspicious about the OP using a new account to sell his higher level account.
