Originally Posted by
mhron
how much does a J class ticket go for?
On SA:
IAD/JNB vv in J is USD 8130.20 (of which usd 253.20 is taxes and surcharges)
JFK/JNB vv in J is USA 7752.20 (of which usd 233.20 is taxes and surcharges)
By the way, the lowest biz fare ex JFK to JNB seems to be on LX at USD 5936.40 of which USD 436.40 is taxes etc). Ex IAD the cheapest I get (I just tried on ITA with a specific set of dates), is on a combination of NW (via AMS) on the outbound and ET (Ethiopean) (via Addis Abeba and Rome) on the inbound. That is USD 5896.40. Not advisable

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Others, with more sophisticated tools (Experflyer etc) will give you better answers, but ITA has proven fairly accurate to me!