I know, it's pretty crazy. It must be very confusing if you're thinking of buying one and you don't know anything about them.
I have seen this couple of places. I was too careful when I bought my Phantom 2. I finally bought on cannykart. It's really crazy.
Ok, it this like the professional? It looks the same and has most of the same specs...right? This is what I see as the difference. P3P 4. Built-in Camera Captures 4K (Pro) or 2.7K (Adv) video & 12.4M Photos 5. DJI Lightbridge Video Downlink, 3.1mi (5Km) range P3-4k 4. Built-in Camera Captures 4K video & 12.4M Photos 5. 2.4G WiFi Video Downlink, 1.2km range