You might want to check my OW RTW Fares analysis spreadsheet (see link below). For first class fares the cheapest fares seems to be around the mid-east (Yemen, Sudan, Saudi Arabia, Israel, Lebanon, Jordan) or Africa (Namibia, South Africa). Based on yesterday's exchange rates, the range for AONE4 is from $8,421.37 (Yemen) to $10,174.46 (South Africa). The highest price is Switzerland ($17,287.23). Taxes, Fuel charges, etc. are not included in the above prices.