The Apple Store drops the prices of a selection of factory-refurbished MacBook Air laptops, with deals starting at $599, as listed below. Plus, each qualifies for free shipping. That's a drop of at least $90 for each model since our mention two days ago, and puts each at the lowest total price we've seen. Each system carries a 1-year Apple warranty (the same as new units). Notables:

• Refurb MacBook Air MD223LL/A Haswell i5 1.7GHz 11.6" 64GB SSD for $599 (down $150)
• refurb MacBook Air MD760LL/A Haswell i5 1.3GHz 13.3" 128GB SSD for $799 (down $130)
• refurb MacBook Air MD232LL/A Haswell i5 1.8GHz 13.3" 256GB SSD for $929 (down $90)
• browse for more refurbished MacBook Air laptops at the Apple Store