For PC's, at right around the $100 mark you can build a 5 ft. DIY cord using JPS in-wall cable, with Marinco connectors (8215 male I believe is the # and 320 IEC). This power cord will stand up well against very pricey company; those I have recommended it to have said it is substantially better than the Synergistic Master Coupler and in the same league as cords like the Acoustic Zen Tsunami. I cannot do a head-to-head in my system, but would say that it is the equal of or better than the 2 Cardas Goldens I own which retail around $370. Performance is said to be very close to the JPS Power which retails at $450 and there have been sellers of JPS Powers here at Audiogon that simply replaced their cords with this DIY version at less than 50% of the used price of JPS Powers.
IC's might be a bit tougher; if you can find someone who has a few extra feet of 47 Labs OTA to part with (you'll need 12 feet or so for a pair of 3 ft. IC's) for say $30-$40 and another $30 for Eichmann Bullet Plugs, you'll have a dynamite IC. I've used Kimber PBJ, Kimber Hero and Silver Audio Silver Bullet 6.0's (which were substantially better than the Heroes) and sold the Silver Bullets because the Eichmann terminated OTA was a ton better.
IC's might be a bit tougher; if you can find someone who has a few extra feet of 47 Labs OTA to part with (you'll need 12 feet or so for a pair of 3 ft. IC's) for say $30-$40 and another $30 for Eichmann Bullet Plugs, you'll have a dynamite IC. I've used Kimber PBJ, Kimber Hero and Silver Audio Silver Bullet 6.0's (which were substantially better than the Heroes) and sold the Silver Bullets because the Eichmann terminated OTA was a ton better.