GoPro Karma Drone - Is this a good deal/value?

Hi, I'm looking to sell my Karma Drone and worried that I might be underselling it? I have the backpack, drone, karma grip and stabilizer, extra propellers, etc... literally everything you need to fly EXCEPT the GoPro camera itself.I was thinking of selling it for $500. Does that seem fair? Am I losing out? Or am I actually selling it for too high? via /r/drones https://ift.tt/2MtxPsi