Payton- I have also been looking for a similar deal.
When we build our house, it will have to have the garage on the second floor due to possible flooding from storm surge. I was thinking about modifying an existing lift to pop the car up on floor 2 and drive it off.
That is not going to work for a lot of reasons; I am going to fabricate my own from scratch, but what I learned from my search was that they are about all the same for a given price range. I was looking for a lot of details but never got very deep info... So I went back to ship weight and did some basic math based on common materials and so forth. You would be surprised how much difference there is in weight between one and the next.
As a mechanical in-jan-eer, I know that weight is not everything, but at the same time, I can certainly spot a trend. When they are made out of mild steel, there are a lot of conclusions that can be drawn from the amount of mass in the box.

Not science- let the flames begin.
By the way, my lift is going to be fabricated in China and I am 100% OK with that. It is not the country of origin that makes the difference, it is the design and execution.
Phil