Try here, directly from Mad Catz on Amazon. They also have the black for $49.
http://www.amazon.com/Wireless-Fender-Stratocaster-Controller-PlayStation-4/dp/B01C6YT8U0?ie=UTF8&m=A1EW1NQB48EQBJ&qid=1463612504&ref_=sr_1_34&s=merchant-items&sr=1-34