I got my Cam to a local shop, but you should be able to find it somewhere else than best buy. Just look for your local photography/camera/camcorder shop. Im pretty sure theyll have it.
For the fisheye, its not exactly a fisheye, my lens is a wide-angle, semi fisheye lens. (which makes the spherical effect, but less than a normal fisheye lens, which you can see more in skatebording movies.) My wide angle semi fisheye is really nice because it makes the effect of a fisheye but does not deform the image like a normal fisheye would do. I think its perfect for filming skiing, and those cost around 150-250 $ ( I paid mine 200 canadian)