Two differences
1. The spreadsheet reports different currency values (source is Oanda)
from this page:
http://www.oanda.com/convert/fxdaily...L&redirected=1
Today's prices
NAD/USD 7.8844
ZAR/USD 7.8322
2. Prices ex-Namibia and ex-SA are not exactly the same
Code:
xONE4
Economy NAD 19,500 ZAR 19,700
Business NAD 45,000 ZAR 45,000
First NAD 66,500 ZAR 66,500
xONE5
Economy NAD 22,300 ZAR 22,700
Business NAD 51,500 ZAR 51,500
First NAD 76,500 ZAR 76,500
xONE6
Economy NAD 26,300 ZAR 26,600
Business NAD 57,500 ZAR 60,500
First NAD 82,000 ZAR 90,000