BlessingX might disagree with me on this, but I consider Audiolineout's cotton RCA-to-Mini to be far superior to the Zu Pivot. That doesn't mean I dislike the Pivot's brighter sound per se. It does mean I won't be buying Zu cables in the future.
At one time, my two Pivots seemed to mark a girthy improvement over DIY ICs I'd used in the past. These days, I find their sound to be overly attenuated.
In my experience, the cheapest way to buy Zu cables is to underbid on the manufacturer's eBay auctions. (One has to keep this up for a few months straight without becoming impatient and bidding above one's target price.) By that method, I was able to pick up a Birth cable for $46. I'd have to check my receipts for prices on my two Pivots, but they were extremely reasonable as well -- twenty-and-change apiece, if I recall corightly.