One thing that should be noted so a question to ask CHESS, have you linked it at all to the FPV device?
Once these are hooked up to an iPad or Nvidia Shield or whatever tablet people will use, they are then linked to the APP in the account name and DJI are reluctant to change this, and its a real pain in the rear!
Also, have you got a reciept for it that you will be sending with the item?
Again, DJI are unwilling to repair these under warranty unless it was brought from an "Authorised Distributor" and a proof of purchase can be provided
If you haven't linked it to an account, and are able to provide a receipt, then people might be more interested, also another point, and I know your adamant that the price is the price, but its been opened, new or not, once its opened, its not NEW, its second hand, regardless of whether its been used or not, people on here will look and see you've opened it, and I have heard of cases where people have brought them, and once they have got them, find out that it most definitely has been used, however carefully the previous owner repacked it
I know you want to sell it, and its just sitting there, so why not invite "sensible" offers from people?
Just a thought, its not mine to sell, but I am just trying to help you