Items not listed

Some of my items are and others are not atm, before an hour ago it was fine I think

Update: I sold 1 and the next one appeared, same relevant mods but different values so different price

Are you selecting the trade option to collapse listings by account? If on, that will cause all of your listings to be shown as 1, if you're looking for your own items.

Doing a search for just your account name is the difference of 1 listing vs all of your listings with that setting.