You get what you pay for. The buckles are auto locking and will never bust on you, fully enclosed keeps your stuff clean, the yolk holds to your back and doesn’t sit on your neck like all the other ones, magnets are dependable and pretty quiet for magnets, webbing attachment means it’s super modular for accessories and holsters (not just theirs but other brands too), it just works.
I tried kuiu, AGC, and several other cheap china brands and I’ll never go back. The only thing that comes close is the Kuiu pro, but the buckles come loose and are thin and cheap and I could see them busting on a cold morning in the wrong situation. For $10 more I’ll take the marsupial over the kuiu any day.