OK. More details. That seller finally started talking. Here is what he said:
"Ok i bought it new like i said, the frame had a scratch and the customer that ordered it did not want it anymore they told me they sent it back to reinforce it with carbon fiber, i didn’t even know where it was since i didn’t see it before and honestly i did not care, all i saw was the opportunity of having a top of the line bike at a great price, like i said there is nothing wrong with the bike, the frame never broke, it was never in an accident".
I don't know if I can trust him. Why would you want to cover a scratch with layers of fiber glass? Was it really a scratch or most likely a crack? I can probably return the bike or ask for partial refund. I do like this bike a lot. And good bikes are sold out everywhere.