A good second hand X11 with all the toppings is going to cost you £200+.
Someone at my clubs just sold his for £190 with all the mods apart from the new orange steering arms.
Ive personally run the car for 2 years now, and its been great! For more info pop over to the-pred website.
Nathan can tell you more than most about the car so your in good hands when talking to him about the car! But feel free to ask any questions and ill do my best to answer as im sure all the other guys will do!