B&H has a used site for Drones. Also check eBay. I put one of my Phantoms on eBay and it was gone within the hour and I got exactly what I wanted for it.
I wish there was a forum page or something similar, I've been looking to sell my nearly brand new x3 but the market on eBay doesn't seem to be that big for fully functioning ones.
I see where DJI is coming from not allowing sales on here but it would be nice to get rid of equipment I'm not using and allow people to enjoy the product.
If you are buying on eBay be very careful. Problem is that you may be buying someone else's problems and you don't really know what it has been through. The one that I sold was only used twice and there were no issues with it at all. I remember talking to a fellow that bought a used on eat B&H and there were issues with it and he called B&H and they took it back and gave him the full credit towards a new Phantom.
I was thinking of selling my Phantom 2, complete with unused controller still in box (as set up to use with Futaba controller), three batteries and a Peli Case. May even consider selling with GoPro 4 Black. Just wasn't sure where to advertise in the UK as it would probably be collection only
Yes, was also thinking of upgrading and moving my I1 with the real old firmware with two rc's and two batteries and never crashed. A section to advertise the older DJI parts or complete system would be great.