No, no search mechanism. Best you can do is go to each page in pending and ctrl-F and then search for your ID.
Right now, there are over 450 items in the queue (down from over 500 on Monday - I'm back!). I know there are a lot of those "Possible Missing Sets" in there. Some of those are really hard to work with due to the info being incomplete. Yours are usually good, but sometimes I don't know what to do with them.
We're trying very hard to bring that number back down. Give us a couple weeks.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).