I have tried to follow the links and use the tools on here. Do I understand that a One World, Round the World Trip in Frist (A) class, 4 continents, purchased and begun in the US, would cost around $9,500?

Does the beginning/ending continent (North America) count in determining if the ticket is AONE3 or AONE4 ?

That the same trip purchased in some place like Egypt would cost around $6,500.?

If the ticket is purchased in Egypt does travel have to begin there? Is there a safe way to purchase a ticket in Egypt from the US?

If I purchased a DONE4 what would it cost to upgrade using miles, eVIP's, etc.?

Thanks in advance.