Other World Computing discounts a selection of used Apple iMacs and MacBooks, with prices starting at $145. Plus, all orders qualify for free shipping. Each item is covered by a 90-day OWC warranty. Note that availability is very limited. Some best bets:
used Apple iMac 20" G5 1.8GHz Desktop for $145 (pictured, low by $44)
used MacBook Air Core i5 1.6GHz 11" 128GB SSD Laptop for $749 ($551 off)
This state-by-state bucket list will help you focus if you are passing through a state and time is limited. Check out these don't-miss destinations.