Other World Computing discounts a selection of used Apple Mac Pros, with prices starting at $729. Plus, all orders qualify for free shipping. Each item is covered by a 90-day OWC warranty. Note that for some models, available quantities may be limited. A couple of best bets, with comparisons against original retail prices:

• Used Apple Mac Pro Quad 2.66GHz Xeon Workstation for $729 (pictured, $2,468 off)
• used Apple Mac Pro 6-Core Xeon 3.46GHz Workstation w/ 16GB RAM for $1,959 ($5,102 off)