For now I'm probably keeping my two Nspires (one is clickpad and the other CX) since I still occasionally use them for games. My CX seems to have battery issues anyway because even if I don't use it for one week, it loses most of it battery charge.

True, although if I was selling them it would probably be between $1 and $30 each, excluding shipping, anyway, because of what TI did with OS 3.6 and the newer hardware. I assume that shipping would probably offset such price, though >.< (although most of the time I got charged cheaper shipping when buying European stuff than American one)

It might be better to start a new topic, though, since this one is called selling rather than buying. People might think you want to sell your calc when it's not the case.