Power Cable Suggestions.

Three to 500 $ is not enough snake oil you need to spend between 3K and 5K to get enough snake oil to hear a difference.

Here is one option (link). PC-OCC wire, larger than 10awg, and shielded.  It is a really good sounding cable for both pre/power amps and for digital gear.  Finish with Furutech FI-11M (Cu or G) or FI-15ME (Cu) plug, and Furutech FI-11M (Cu or G) or FI-15E (Cu) iec, and you are under $500 for something that is probably better than the finished cords you are looking at.  A blade knife, wire stripper, and screw driver are all you would need.  The cable even looks good as-is without techflex.  IMO a huge bang for the buck with the only downside being that it is a little stiff.  There are other pretty good bulk options, especially for digital gear where something smaller, like around 14awg would work fine but, for amplification, this Oyaide would be hard to beat.

Cullen Cables are quite good.  I own lots of them.  However, time is of the essence seems counterintuitive to Patrick’s timeline.  He is a one man show and my last round was quite delayed.  Great product, no hurry.  Good hunting.

@squared80 

...no wonder this hobby is dying.

Can you quantify this statement? Anecdotally the opposite seems true. 

@celtic66 

Cullen Cables are quite good.

Yep, just ordered 2 custom PCs for my subs.