I signed up and just did a dummy booking for BKK-MEL-BKK and it looks like brilliant value. 36,000 miles + 689 cash + 102 tax, total 36,000 miles + 791. If 36,000 miles at half price, it would be a total of approximately $1400 return in Business Class. Just need a sale to come along! It is nice how it can all be done online as well.