Truck Bed Bike Carrier by Thule - $75 each.

$70 each for GCC members.

See CL at http://gainesville.craigslist.org/bik/4742538546.html

They cost $169.95 new. I have two of these ! Used about 10 times. Easy as pie!
Thule Insta-Gater Truck Bed Bike Carrier 501
Sold truck. These were used less than 10 times!!!
Turn your pick-up truck bed into a versatile bike carrier. No drilling or bolting required.
New:$169.95