Simple device? Yes, it one sense it is, but really rather amazing what it can do.

You are buying not only the device, but the liability the company carries by bringing such a device to market. Plus, the market of potential customers is somewhat small, thus the higher price.

I picked up one of the ACR's with internal GPS last year for a bit over $500.

I think those that "need" a $200 custom knife, yet balk at a PLB due to price have misplaced priorities.