They finally added the functionality to look through all your listed selling/buying etc. in the Transactions section of the Trading Post.
If you were like me and saved a lot of stuff to list while waiting for the TP to come up in the first week, you probably put a ton of stuff up there.
I had something like 360 items up for sale. Just cleaned it all out since almost all of it had competition of vendor pricing.
So help reduce the TP lag, and go clean out all the stuff that’s never going to sell