Buy Air France-KLM Flying Blue Miles With 80% Bonus, 1.69 Cents Each: Worth It?

Strategically buying miles & points for luxury travel can be a great deal. We've just seen the Air France-KLM Flying Blue program launch a new promotion on purchased miles, with an offer to buy miles with up to an 80% bonus, at a cost of 1.69 cents each. While not quite in line with the best-ever offers we've seen from the program, it still has the potential to be a good deal, if you have a specif