The Apple Store continues to offer a selection of factory-refurbished Apple Mac Pro workstations, as listed below. Plus, all systems receive free shipping. At up to $850 off, each system is tied with our March mention as the lowest total price we could find. Plus, all are lower than the best price we could find for a new unit, typically by wide margins. A 1-year warranty applies, the same as new systems. Items are removed from Apple's site when they sell out. The deals:

• Refurbished Apple MC560LL/A Mac Pro Quad-Core Xeon 2.8GHz Workstation for $1,819
• refurbished Apple MD770LL/A Mac Pro Quad-Core Xeon 3.2GHz Workstation for $2,139
• refurbished Apple MC561LL/A Mac Pro 8-Core Xeon 2.4GHz Workstation for $2,649
• refurbished Apple MD771LL/A Mac Pro 12-Core Xeon 2.4GHz Workstation for $3,239
• shop for more refurbished Apple Mac Pro Workstations at The Apple Store