I forgot I use logitech 5.1 speakers too, they're really solid and well built compared to the creative speakers I had before them. Really logitech is a good company.
About their keyboard prices. Steelseries and Razer charge just as much for their keyboards, and to be honest I prefer the logitech ones. The only negative point I have about my G15 keyboard is the USB ports on it are USB 1.1 (I think, Windows brings up a bubble saying the attached device can run faster if plugged into a USB 2.0 port if I use them, so...)