You can get another $7 off this cryogenically-treated, gold-plated "audio grade" power socket, but only if you buy four. The customer reviews are splendid:

Finally something to go with my custom vacuum sputtered unobtainium circuit breaker contacts and calibrated studio grade Romex. Now if I can just get the power company to get rid of those pesky scalar waves in my zero point energy transmission system, I'll be all set.

The vendor has also trademarked the phrase "Audio Grade."

Wattgate 381 Audio Grade Duplex Socket [Parts Express] Thanks, Joel!