Amazon offers RoboDoc: The Creation of RoboCop [Collector's Edition Blu-ray] for  (reg. $27.98) free shipping with Amazon Prime. 

Product Description: 
RoboDoc: The Creation of RoboCop takes an in-depth look into the ground breaking franchise and features new interviews with cast and crew, including Hollywood icons such as Peter Weller, Diane Robin, Ronny Cox, Nancy Allen, Ray Wise, director Paul Verhoeven & more.