Skate: 38k?! that thing has less hardware and design in it that a parrot quadrotor, and you can buy hundreds of them for the price of one of these.
pop up drone: This may actually be worth that 38k, if only because you can shoot it out of a buttoned up armored vehicle.
Hybrid drone: Cool IF it works. And judging from the look of those props there are going to have to be some changes in the laws of physics before it does. I say possible scam.
Sonar drone: See hybrid drone.
Fish robot: 16 kinds of why bother.
Self driving car kit: The beauty of this? it will eventually become surplus and I can buy it and strap it on MY car :D
Robo arm: see fish robot.
Nimbus: possible winner of the totally pointless award. it's gigantic, STILL won't work in inclement weather, and does the same job as much cheaper smaller vehicles.