That's kind of strange. When Comcast came and setup our cable (HD), we got HD component cables that were black with gold colored metal parts. Anyway, as has been said, unless you are a complete audiophile/videophile (or whatever those are called) you won't notice much of a difference, if any.
Use the money on something which will add noticeable value to your setup - surround sound system / stereo system. Maybe once you have one of those, the extra costly component cables will maybe make a noticeable difference.