I want to pick up a second controller for my inspire, and I see on amazon there's controllers for $300 bucks or so... http://www.amazon.com/gp/product/B0...rd_t=36701&pf_rd_p=2437869742&pf_rd_i=desktop But when I look at dji or camera store pages they're listing around $650.... DJI Inspire 1 - Remote Controller | PROCAM Photo & Video Gear | Detroit - Chicago What's the catch? Are these knock off controllers? or older models that have limited features? I don't want to cheap out and end up with something risky, but I'm only looking to control the camera... so perhaps the limitations of an older model wouldn't be a problem? I'm not sure... does anyone know?