So I got some more info and there’s a few models. Some can be screwed into the ground which would be good to avoid theft and some are meant to not be connected to the ground. they’re also about 900 lbs each but you can still move them by yourself with a device. You can also get a “ballistic plate” extension to put on the top of these things for extra cover.
It’s actually pretty awesome how these work, basically a car hits it and it flips over like a chair raising the car. Still unsure on the cost though. What would you think these folk would be selling one of these for?