the $47K price tag represents an approx 10% increase... which isn't too bad in percentage terms..
Anyway - they may as well put the price up to:
# Slowdown the runaway demand for the them a little
# Recoup their development costs
# 'cash up' now, before the opportunity is potentially plundered by Chinese knockoffs; (Patient Pending not withstanding?)..
# dont forget the "just in Time for xmas" syndrome - when everything goes up at peak times grrr
# Build a war chest for the next innovation..
