MegaMacs offers the refurbished Apple iMac Core 2 Duo 3.06GHz 21.5" Desktop, model no. MB950LL/A, for $549.99 plus around $33 for shipping. That's $202 under our April mention of a refurb and the lowest total price we've seen for this model. (It's also $148 under a similar refurb configuration elsewhere.) This iMac features the Intel Core 2 Duo 3.06GHz processor, 21.5" 1920x1080 widescreen LCD, 4GB RAM, 500GB hard drive, SuperDrive, Bluetooth 2.1 +EDR, AirPort Extreme, iSight, ATI Radeon HD 4670 256MB video card, and Mac OS X 10.10 Yosemite. Deal ends June 10.

A 30-day MegaMacs warranty applies.