Hi, I'm selling my Casio CTK-2100 61-Key Portable Keyboard because I'm moving off campus. Had it for ~1+ years, still works great! The set comes with the Keyboard, Power Supply and Stand. The original Headphones don't work very well anymore, but I'll give it to you if you want it. The package can be found on Amazon here:

http://www.amazon.com/Casio-CTK-2100-Portable-Keyboard-Headphones/dp/B002KG9LWU

I still have the original box for packaging and moving too. Asking for ~$70.
Item is at EV. Let me know if you want to see it! Thanks!