It is not very efficient in terms of miles per gallon. (autolist.com)
This means they are no longer follow a set of award charts and can and will charge whatever they feel like in terms of miles required to redeem. (awardbookingservice.com)
The only way you can win in this situation is by purchasing miles at a 100 % bonus and finding the cheapest tickets in terms of miles spent. (thepointsguide.com)