I took advantage of some special pricing at B&H a month ago to pick up a new P4A for $869. I bought it for the camera but there are some limitation you need to be aware of that I didn't adequately research. The range of the P4A is markedly less than my Mavic Pro and it gets wireless interference warnings even when I am right next to it. I'm guessing that is because of not being dual band. Flying it out a distance of around 1500-2000 feet over water it frequently disconnects. No way does it have a 7 KM range in my opinion.
Secondly, the P4A operates on a different firmware from the
P4P. Most notably, it doesn't offer any panoramic options. That is actually a big bummer for me. Image quality is better/different from the Mavic Pro but not sure it offers enough of an advantage. Also, the lens seems to have a soft corner. My Mavic Pro is consistent edge to edge.
Finally, the Phantoms are a lot nosier. These are not discreet drones even at 400 feet.