The .375 appears to be based on an original Oberndorf Magnum action, although the altered bolt handle is an abomination and the much too high Akeh side mount certainly doesn't add to the desirabilty of the weapon.

The .416 is obviously based on a Brno ZKK 602 action (and barrel?), and no matter how much it is dolled up, a Brno remains a Brno. I would say both rifles are seriously overpriced, but who knows what the buying public is willing to pay?