I bought a random Atari CX2600 system off ebay that had a stock photo and no cords. Originally I was going to sell this after buying replacement cords, but after reading the description it turns out that this is one of those units that was produced in limited quantities for demoing in Sunnyvale. It has the yellow lines instead of orange and says NOT FOR RESALE on the bottom just like it is supposed to. The switches on the system are also smoother and rounded at the top, unlike the ones on my normal 4-switch woody and 4-switch vader.

How much is this worth when compared to the other two?