Thought I'd pass this along...

Booked a week (sat-sat, 10am-10am) rental of a Grand Cherokee for $375

Went back a few weeks later to check prices and messed up and booked the week (sat-sat, 10am but put return on sat at 12pm instead)... dropped the price to $319.

Don't know if anyone can't exploit this glitch elsewhere. This was out of BOS.

Good luck!