West are pedaling thier own branded class B AIS transponder for $500

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/371822/377%20710/0/AIS/Primary%20Search/mode%20matchallpartial/0/0?N=377 710&Ne=0&Ntt=AIS&Ntk=Primary Search&Ntx=mode matchallpartial&Nao=0&Ns=0&keyword=AIS&isLTokenURL=true&storeNum=5003&subdeptNum=3&classNum=10880

Anybody have experience with it?
Thanks