Gold plated HDMI and DVI cables don't do anything. Digital signals pretty much work or don't and if they don't you replace it with another cable, no need to spend a lot on gold plated nonsense. Only thing worth paying a little extra for when covering large distances is an extra shielded cable to minimize interference.
Yeah I now that, I am in no way saying buy gold plated cause it's a load of old cobblers. I am just saying that the picture (for the link I posted) shows something that isn't the product (at least in my experience).