Yep, I just recently bought the Dudu7 12+512 - you know, their top of the range.
Nowhere on the Mekede AliExpress page does it say, "Make sure to message your seller to request 360 degree camera capabilities".
Nowhere is there a box you can check to "include 360 camera chip" and adjust the sale price accordingly.
Nowhere on the page I purchased the unit from did it even mention it as an optional extra.
Trust me, I checked.
I figured, believe it or not, that by purchasing the top specc'ed 9.5" unit it might actually be included.
In a sense, they've robbed themselves of an extra sale, because I would have then gone ahead and bought their 4 cameras too... Now I'm just annoyed.
It's a dumb policy.