@nerthos @sim You're not paying so much for it being complex or difficult to make, as much as you are paying for something made to an exacting specification where the maker has to be very meticulously detailed, yeah.
This goes for both, honestly, well-made chainmail doesn't impede movement much at all except in the hands as goes without saying (if you have chain mitts) but if it's not made well or is poorly fitted it gets very restrictive very quickly.
It's just a lot easier to mess up platemail (the tolerances are very small before it starts restricting you) than it is chain.