for that kind of money, you can get yourself 2 scissor lifts and I would feel much safer. Or better yet, a 4-post AND a scissor lift (best combo, I love mine) I question how much work you can do under that car, the 2 arms are in the way and the part on the floor is just asking for you to trip on it. It also does not seem too stable in my mind, how does it stop the car from tipping outward and onto the ground or back into the lift mechanism ? it most likely has 4 lift points to be safe and prevent tipping but then you have just wiped out all the working space.
The only reason I can see for that lift is just like it says, mobility and using up a corner of the garage.