I purchased this new about 5 or 6 years ago and it's always worked well for me. But, last month I bought a BenQ monitor and while I continued to use this to calibrate it using the graphics card, I wanted to upgrade to a unit that will calibrate the chip in monitor. So, this is up for sale. Excellent condition, in the box, includes quick start guide and software CD, from a non-smoking house. Works fine. $55 including shipping (to continental US addresses only). PayPal fees included as well.