from the recent issue of Top Tech Tidbits newsletter: The GPSAthon is Sendero's innovative and somewhat radical pricing experiment. they will combine purchases worldwide for GPS systems running on the BrailleNote, VoiceNote, Braille Sense or Voice Sense until the end of the year and give everybody a quantity discount depending on how many people buy. People who commit to buy a system will save at least $500 from the usual price and perhaps more depending on how many people buy. http://senderogroup.com/products/gpsathon.htm