Newegg offers the AMD A8-5600K Trinity 3.6GHz Quad-Core Barebones Kit, bundled with a $20 Shutterfly eGift Card, for $297.99. (The gift card will be automatically added to your cart.) This $10 mail-in rebate cuts it to $287.99. With $6.85 for shipping, and assuming you'll use the gift card, that's $122 under the lowest total price we could find for these items purchased separately elsewhere.
It includes the AMD A8-5600K Trinity 3.6GHz quad-core processor with integrated Radeon HD 7560D graphics, ASUS AMD A78 FM2+ micro ATX motherboard, Rosewill I3-397-BK Micro-ATX mini tower computer case with 400-watt power supply, Patriot 120GB Blaze Serial ATA SSD, Western Digital WD Blue 1TB 7200 rpm hard drive, and Team Vulcan 8GB DDR3-1600 PC3-12800 240-Pin RAM kit. Deal ends December 15.