The cables you are refering to are actually pretty cheap cables. It is the cost of the termination that gets you. You can buy interconnects for $15,000 for 1 meter terminated with either RCA or XLR and then get another 1/2 meter for only $2,400 more. Based on that scenario, the termination cost and connectors cost you $10,200. By comparison, the cabling is dirt cheap and relatively quite a bargain.