Royal Air Maroc return flights London - Casablanca - London +

I am selling a return flight London Casablanca London with departure on Saturday 22nd December and return on Sunday 6th January 2013 for £431.49 and you will need to pay fees for changing the details or dates. The fare for the same flights is worth £868.49 (checked fares today Saturday 17.11.12) The reason for sale is that I cannot travel at that time anymore. Please email me if you are interested and wish to negotiate the price, I will accept reasonable offers only.