with a truck it is always a little bit difficuilt to give any kind of informations. Also the fees could change quickly. Also coming through the Sinai there are other regulations than coming from Libya or Sudan.
I think anyone will be very careful to give out any kind of information. So you will be best of to either contact an automobile club or an egyptain travel agency they could help you out with the informations. May be the best is to contact the egyptain automobile club in Cairo straight away for detailed infos if you can't get them anywhere else