Where did you get it for $100? I just got one and paid around $160, which appears to be discounted from the list price.
I washed one of our old ones in the washing machine by accident and it doesn't appear to be working anymore. I just got the new style yesterday, but find that the range is slightly better than the old one. The design also looks much nicer, matching the styling on the iPhone, for example, with the black and chrome.