Originally Posted by newcx12345
I don't think you can buy these XONEX tickets EX a different country from where they are issued. (ie. therefore if buy in BKK, then you must start in BKK).
This is wrong information. You can buy an OneWorld RTW (xONEx) ticket that starts in any country served by OW, and you can buy that ticket in any other country. The problem, however, is that you pay whichever fare is higher -- the fare from the country in which you bought the ticket, or the fare from the country in which the journey begins.
Do go to the Oneworld forum, where you'll find a great deal of information (begin by reading the sticky threads).