I was talking to the guys at my local RC shop today and he was telling me that it's DJI setting the price that high out here and there's no room for the local RC shops to move on the price :(
say the word!:D
I feel your pain.
In Australia we get our pants pulled down then we're bent over the counter!
US$3000 is currently AU$3428 yet if we want one we're going to have to fork out AU$4130.
That's just nasty!
Looking at the picture of the optical flow camera there's 2 ultrasonic sensors there as well.
My thoughts are that there's a better than good chance that's what will trigger the gear to come down automatically when you get to close to the ground