I must say that I don't have any experience concerning the AA ticketing fee, but many European airlines are now cashing with this. However companies like AF, BA or AY usually clearly say that they charge a ticketing fee.

Last February AY charged me a 50€ ticketing fee (on top of the USD100) for changing the route on my DBLOB34. As they had not mentionned about this and I complained, they refounded me the ticketing fee.

However I must say that 70€ for ticketing is high...