I have bought from them for years and they've been a great retailer.
I will say that I've had trouble with both 30 pin dock connector cables and lightning cables.
I bought several 10 foot dock cables and the 30-in end connectors fell apart. They shipped me replacements immediately when I contacted them about it, but they also fell apart. I believe they have since changed the design completely. Since it's a lifetime guarantee on all cables, I just need to take the time to call them and exchange again.
To get the exchange, all I had to do was call and then e-mail pictures of the f broken cables. Did not have to ship the bad ones back.
I also bough one 10 foot lightning cable, and it has come apart on the lightning end as well. The cable jacket has separated at the lighting end exposing the wires. They will replace this too I'm sure if I just get around to calling them.
I have bought dozens of other cables(HDMI, ethernet, audio, etc.) over the years and had no trouble with them at all.