can you explain this too me? because i am picturing being twisted up in the rocks and the only decent spot to put this jack is at an angle which puts this base on a corner. in my mind it seems like it would be less stable.
Sure: Try to use a Hi-Lift to raise one end of a vehicle on anything but perfectly level ground, and it
will try to tip off, especially if you're jacking the rear where a set parking brake is no help and you have to rely solely on blocking the wheels. Agreed? Even on level ground, you know it doesn't take much of a shove to tip the vehicle sideways off the jack. As I wrote in the review, sometimes you want that, but a lot of times you don't. The Safe Jack adds a huge amount of sideways stability on level ground, and gives you a good five degrees worth of tilt leeway either side if the ground is not level. Obviously it will not work in every situation, but it does significantly expand the situational capabilities of the jack, as well as its safety.
Regarding the cost, the unit I tested was a prototype and $69 was the price at that time. Apparently the company decided that production at that level wasn't feasible. I know that, even at $109, I wouldn't try to replicate it myself. And it's a better deal at that than $45 for the red plastic base. I
did make a double-thickness piece of plywood with a simple perimeter for the jack base rather than pay that.