You are paying way too much for those cables. I bought two 1x-16x cables, and got them for a lot cheaper. 30 BTC for 5 cables is retarded!
Bought one on Ebay from Hongkong for a few bucks. It took 4-6 weeks to show up though
And paid 1.25 BTC (shipping already included, firstclass) for the other cable from a user on EMC's forum.
There is almost 7BTC in shipping because I took express shipping. These are Mollex cable. Cheaper cable are available at ~50% the price but I want the best quality. I don't think waiting 4-6 weeks to save a couple buck is a great idea because the card are idle during that time.