Fuzuma,
There used to be an employee only For Sale page on Groupworld. Suggest you check with one of the EGHQ staff (excuse to visit Costa!) - they seem to be more familiar with the site and could give you more up to date information.
If you find you're getting close to departure day and you still have stuff to get rid of, you could try
Cash Converters Dubai who will buy just about anything. Don't expect to get much money, but they will collect and take away.
Best of luck,
7B