I've been impressed by the Van den Hull hybrid for amps which lists for around $425 and sells for $125-150 on audiogon and the K-works empowered cord for digital sources &/or amps which lists for around $275.
Best All-Around $300 PCs?
Sure, there's a lot of PCs hitting the price stratosphere but how about "reasonably" priced stuff? $300 seems like a nice price point!