Amazon offers Prime members Star Wars: The Original Trilogy on Blu-ray and DVD for $19.99 with free shipping. (Target charges the same via in-store pickup.) That's the lowest price we've seen and a current low by $2. It includes A New Hope, The Empire Strikes Back, and Return Of The Jedi.

Update: The price has increased at Amazon; however, Target still offers it for $19.99 with in-store pickup.