$100? Looks like you may have been looking at "Monster" cables.
Somoene may argue me here, but for short cables and such, I see absolutely no reason to spend that much on a cable.
For example, a 4 foot cable, I doubt unoxidized, special copper with atoms running in certain ways, blah blah, will yeild no real advantage.
And the people at the elctronic store ( not all of them, but most ) will do anything to sell you the high priced cable.
I went looking for a optical cable for my home entertainment system, and the guy would swear on his mothers life the $70 dollar one would sound better than the $14 one. Even after I explained with digital, it's there or it isn't, he told me I was misinformed.