Has anyone been on AE-Marketplace from OCONUS? Are there OCONUS duty stations to choose?

You can contact your branch manager and ask to submit an FSTE if you aren't too close to your DEROS. If you are within six months of your DEROS it is definitely too late.

I've not heard of that site, AE-Marketplace SSG (Join to see). Hope you find a new unit & can get it done as soon as you can... before you receive any notifications for orders to somewhere else. Work with your personnel office - S1/G1 depending on your level to see what's available. It used to be much easier to get a follow on assignment in Germany back in the day. I had a chance to get another assignment about 2-3 hours away in Germany from where I was assigned in Bamberg, GE in the 1990s. I made the mistake of requesting a CONUS assignment, since I was on my first tour in the Army. I got sent to Ft. Sill, OK when I should have tried to stay in Germany. Best of Luck to you!

I was offered Japan, Germany, Kuwait, Korea, and Italy. They are there.