As one of its daily deals, 1Sale offers the refurbished 2.38-lb. Apple MacBook Air Intel Core i5 1.6GHz 11.6" Laptop, model no. MC969LL/A, for $689.99 with free shipping. That's $10 below our mention from three days ago and the lowest total price we've seen. (It's a price low for a refurb by $270.) It features an Intel Core i5 1.6GHz Sandy Bridge dual-core processor, 11.6" 1366x768 LED-backlit display, 4GB RAM, 128GB SSD, AirPort Extreme (802.11n wireless), Bluetooth 4.0, Facetime camera, Thunderbolt port, and Mac OS X 10.9 Mavericks. Deal ends today.

A 90-day warranty applies, although it's unclear who backs it.