The Adaptix vice seems like a nice approach for a lot of use cases, but unless I'm mistaken, the fractal vice seems like it will get a better grip to prevent cu

The Adaptix vice seems like a nice approach for a lot of use cases, but unless I'm mistaken, the fractal vice seems like it will get a better grip to prevent curved objects from turning with less pressure applied from the vice, right? i.e. if someone is working with material other than metal and doesn't want to damage it? Regardless, I'm a little shocked that a) I've never seen either of these designs manufactured by low-cost brands like Harbor Freight, and b) the ones that are out there are so expensive. A complete Adaptix vice setup is $7000? I'm sure that makes sense for professional machinists or people working with a LOT of force, but surely a hobbyist version could be made for a sale price less than $100, maybe $200 for a heavy-duty version. It's basically just a big vice that has two smaller, perpendicular vices for its jaws, and the smaller vices have captive, sliding metal bars between their jaws, right? I'm pretty sure I could make a set of jaws that would suit my purposes out of parts that would cost no more than $25 at the hardware store. It would have saved me an awful lot of headache on small hobby projects over the years, so I'm probably just going to go ahead and hack one together. Either of the fractal designs (classic "teeth at the ends" version versus "flat-faced", for lack of better names) seem like they would require a decent amount of fairly precise machining, so I can understand them costing more, but $2000 for an Ali Express version still seems high.