You got it about ebay and optic cables. So many things can go wrong just because of poor manufacturing , you are running data with the speed of light. It not just On of Off like bits - meaning cable is working or not. Sometimes you have to pick one (cheapest) or the other(good one) if you can't have both and most of the time you can't have both.There's cheap and there's good. I'm hoping for good and cheap. We shall see. My experience with cheap ebay cables has not been a terribly positive one.
I'd rather pay a little more at fs.com and have a base guarantee of quality and more importantly a guarantee that it will be compatible with my gear. You always roll the dice with ebay. The people at fs.com are very responsive with tech support issues as well.Are they really cheaper? When I look for fibers or transceivers I find them on ebay for less (including taxes & customs!).