Looking at availability in the UK, it does seem it will cost around $100 to be delivered to USA from the dealers have found (albeit within a few days and tracked –though not by itself
).
Mine will be used forhiking/trekking/travel. For years have been using a PDA and bluetoothGPS to record my movements, then on image upload have tried to record the location against the time/track recorded on the PDA. The Pentax GPS unit will clearly make that tedious process redundant.
Submitted a suggestion to Pentax several years ago of adding bluetooth to the camera body to enable images to be tagged with information gathered from a bluetooth GPS(never got any kind of reply). Obviously, have complied with their chosen solution.