Power Cables diminishing returns

Put a bi directional ac noise blocking cord on your digital.
Put the best ac filtering cord you can afford on your pre.
Make your own 10 gauge cord from materials at home depot for your amp. They will give your easy instructions, might even help you with it on a quiet day. There's isolation for your digital, conditioning for the precious small signals in pre and fast current for the aamp. Good start. Used cords are great value.

"$2000 power cord actually has no more than total of $50 material + work."

Czarivey, where exactly can I purchase the raw material for a MSRP $2000 cable for only $50? I'm sure I'm not the only one who would be interested in this info.

My simple little DIY cable would cost me roughly $40/cable in material. And that is a pretty basic cable!

I wanted to re-visit this important subject. It would appear that OP has not responded for some time? Anyone know about his buying decision?
Second, in 2013 & 2014 I have had the good fortune of listening to some outstanding PC(s). Here are my strong suggestions; 1st place is no doubt the Stage III Concepts offered by Brian @ Aaudio imports. 2nd place goes to Silent Source offered by Frank / based in Dallas TX. 3rd place is a tie w/ Signal Cable and the newest Wireworld Electra 7.

All of these PC are outstanding, to say the very least. Each is at a different price-point and requires careful consideration based upon the 10-20% cost of overall system value. Happy listening!

Its impossible to but a money amount on on the equipment, when raising ,percentages.What happens if you buy used equipment that say was originally sold for 5,000 and now sells for 500 .Stop playing the jealous neighbor, enjoy what you have .But be careful of BS prices.

@brownsfan 
Completely agree with you. I upgraded from stock to all Frey 2 over the past year and it made a significant difference in my system. 

I also use Frey2 or TYR2 (speaker cable) for my interconnects especially the XLR. 
Thrilled with what it has produced.