I didnt notice the date until after posting, my bad. The costs (in points) have risen significantly since then I see.

I am not sure who did your calculations but they should be fired. firstly a $100 voucher at 15,100 points is not 0.75 cents per point its 0.62 cents per point. Also a business class trip to London is not 128,000 each way, thats the points required for an economy trip to london. the value per poi...