I don't trust those noname Factory Direct HDMI cables at all.If there's a local computer liquidator or discount store near you they usually have good prices.
I picked up the HDMI cable I needed at the local Factory Direct. IIRC it was $10. Same for the optical cable.
At least some of them are pretty thin gauge (30?), and one I bought wouldn't even work at all with some of my equipment. Some issue with the port. I couldn't return it either because it was a final sale. The only time I've had a similar problem is when I bought an el cheapo cable at Active Surplus, and I think that one may have been a used one.
Anyways, I tend to order from Monoprice and Blue Jeans. For basic ones it actually ends up being cheaper or the same price for a higher quality cable, although you have to wait a week or two for it to arrive. I just keep one extra cable around just in case for emergencies, which keeps me from having to buy el crappo surplus cables, or having to spend $50 on some mid-tier brand name somewhere.