Entertainment Earth has the exclusive multipack of Astromech Droids in-stock! The set retails for $79.99 and ships for free.
The set includes Jabba's Bartender Droid (Return Of The Jedi), R7-F5 (The Clone Wars), QT-KT (The Clone Wars), R7-D4 (The Clone Wars), R2-C2 (The Clone Wars), R2-A5 (A New Hope). You can order your set here!