Cable Costs Relative to System

I have a coil of 200ft of a quality Belden Teflon shielded coax (recommended by Jon Risch and a pile of Vampire RCA tiffany style connectors I have yet to put together. (Lucky me i bought the Belden before the big price increase in Teflon products, and the seeming disappearance of 'by the foot' Beldon esoteric products)
Since i am so lazy.. I never made the interconnects. I even have a template I made to hold the RCA and wire to solder with Cardas solder (which i also still have!)
Maybe i should get off my arse and make the cables...
When I was MUCH younger I made some interconnects like 30 years ago with Levinson branded teflon coax and cheap Radio Shack RCAs. (I still have them but not using them)
One thing is making a good power cable can be just as expensive as just buying a readymade one like the $70 cords. (I also made a bunch of powercords with Wattgate and shielded Belden, but the Pangea turned out to be better in my system.)

Cables are different from the rest of the system - they are non-perishable. It doesn't hurt to buy better cables now (if you see great bargain) for the future instead of buying twice - as long as you keep them neutral sounding.

Elizabeth and Mitch2

I don't believe it makes sense or you can put a price relative to the system. There's too big a gap between performance and price, meaning the "best" cables cost a fraction of what the most expensive cables cost.

To Mitch2, as a dealer I did the comparison work between entry level equipment and the upgrade path that gives the best bang for the buck. Working from a starting point equipment upgrades will never make the bang for the buck improvements wire will. You simply do not hear the full potential of what better equipment does until the wire is at a refined state. It's as simple as the fact that you are wasting a lot of money when equipment is focused on before wire. Not only that but with inferior wire your comparison choices on equipment will be altered because of the coloration the wire imparts to the system. Neutrality is the key and there are $150 interconnects that are as neutral as the very best neutral ones are, they just reveal a little less detail.

My common sense proof of when you are done with wire comes when the given cost of a wire upgrade that makes a discernable difference is still under what a better component can do that costs more. Wire comes first then equipment upgrades.

Now that said you have to weed through the plethora of cable to get the best, because the best interconnect I know of that outperforms those costing thousands is a modest $800. There are dozens of $800 cables that mid performers so that is where the rift is between price versus performance. As a dealer I consulted on many mega buck systems that weren't doing what they should even though they had tens of thousands in wire. My wire recommendations that "fixed" the problems were way cheaper than what the person already had.

I'm writing a book on system synergy that explains in a common sense manner what the weak links of a system are and why. The common sense approach allows audiophiles to have a way better understanding of the role wire takes in a system, and which wire is the most important to have the best in.

Those in the know know that there are only a few interconnects that could be called the best. None of them is $800 unless you meant per inch or centimeter.
Also, I have three source components but only one interconnect for them. It was $800 new, by the way, but it is far from best, just very good. In addition, sometimes one has to run long wires, and it may easily cost $10k new just for that.
I treat cables and power cords as components. In my modest system they cost about 25%, all were bought used.

Aintitgr8, you say,

My common sense proof of when you are done with wire comes when the given cost of a wire upgrade that makes a discernable difference is still under what a better component can do that costs more.

IMO, for me at least, that point still falls at "about 10 percent of system cost, and no higher than 25 percent," as I posted in 2005.

Wire comes first then equipment upgrades.

I see your point with this and suggest the important thing is to have an idea of the system price range where you expect to end up (at least with each step forward), and then settle in on cables that makes sense for that price range while you try different equipment. My experience with a variety of cables is that I can meet that goal relatively inexpensively, for my $50K list system, with simple DIY projects using very good quality bulk cables and top level connectors. I also have a Cable Cooker to condition them initially and periodically. I have found the resulting cables to be suitably balanced between neutrality, smoothness, detail, tonality, extension and dynamics when compared with other brand name cables I have tried, which sometimes do well in some areas but not so well in others. I can easily discern the effect of changes in my equipment. Using these cables has allowed me to get away from the expense and time required to constantly buy and try a variety of different cables.

BTW, do you care to share what cable you are speaking of when you say,

the best interconnect I know of that outperforms those costing thousands is a modest $800