So for anyone who might not know, I recently purchased a Logitech Dinovo Edge (pic below), and I am quite happy with it. In fact, I LOVE this keyboard 

I used to use a Logitech DiNovo Media Desktop Laser:

Its a keyboard-mouse combo, and the mouse is the MX1000 laser, which I stopped using ~ 2 years ago, because I got the MX1100 laser mouse.
Anyway, why am I telling you all that you may ask?
Because I have a bit of a problem:
A good friend of mine wants to buy the keyboard-mouse combo (pic above) from me, which I dont use atm, and definitely dont need.
But my problem is, that I just cant get to sell this beautiful keyboard, which I love so much. Hell, I even love it more than my brand new DiNovo Edge
considering that I used it for more than 3 years.
I dont need it, and I dont use it anymore, it just sits there in a box. But I just cant let it go, its too hard! 
What should I do? Please help 
"Cute Pokemon always get Parahax!"