Originally Posted by
Kagehitokiri
Ah.
Have a look at this thread OP:
http://www.flyertalk.com/forum/trave...ew-thread.html
Data comes from the airlines who don't permit the sort of sweeping that KVS does. I believe ExpertFlyer pays for it, which is why it charges you. Or you can buy yourself access to a GDS, but that's not cheap.