How do I know if seller is selling genuine cables?

No guarantee. Buy from reputable sellers with great feedback. Pay with Paypal and try them for three weeks, if they sound good and meet the described criteria as presented in the add, be happy and enjoy the music.

Plan B: Only buy from authorized dealers at new or demo pricing.

Beware of Fake NBS Statement Power Cords being sold on Craigslist

The Poster states Las Vegas but when you ask to go and pickup and pay

you are told they come have to come from China

Ripoff!

Des

This is a real problem, I've now seen over a dozen fake Audio Note Japan cables that people paid good money for.
All I can say is BE CAREFUL !
Dealer disclaimer

Is it just me or are there always alot of Audioquest Sky for sale on this site at really low prices? They almost never have a box with them (unless priced higher). I have wanted to try the Sky but am skeptical of the fakes. Someone may have great feedback here on Agon but may not know the history of what they are selling. Is great feedback enough to accept the cables as the real deal?