Some kits may be over the $100 mark, but individual radios are usually in the $20-$30 mark. https://www.sparkfun.com/search/results?term=xbee&what=products htt

Some kits may be over the $100 mark, but individual radios are usually in the $20-$30 mark. https://www.sparkfun.com/search/results?term=xbee&what=products https://www.sparkfun.com/search/results?term=xbee&what=p... https://www.adafruit.com/index.php?main_page=adasearch&q=xbee https://www.adafruit.com/index.php?main_page=adasearch&q...