but I got it for $70 from www.chinavasion.com I really like it, it has 4GB but no camera. A new one came out with 8GB and camera for about $95 at Chinavasion.
I have the SuperTalent branded version of the second link that I got off Ebay a while back.
Battery life on that one is great. Survives 4, 2 hour plane trips even with the backlight on the whole time and still had plenty more life left in it, but I plug it in when I get back home.
I've got no problem with battery life. I've done 4+ hours of video with power left over. I generally don't use it for more than an hour or two while working out, but I'll probably give it a good workout at the end of the month when I take a 15+ hour flight.