For the OP, speaking to the AFPEX desk recently the service is free, no matter what your license so long as you are flying privately, start using it as part of your job then they charge.
Mike Hallam is right about Olivia, it is superb, it does everything the God awful AFPEX doesn't, I personally prefer Rocket Route for the reasons Cusco said. There is always a human available, there is always development going on and the prices are good. As a company we buy blocks of Rocket Route plans but also keep Olivia available.
AFPEX is over complex, poorly designed and don't get me started on the ridiculous password system. With all the other systems on the market I would have expected NATs to come up with something better, sadly they seem to have decided they know best and created a pile of c
SND