Amazon.com has the Playstation 3 Energizer Power & Play Charging System for $14.97 with free shipping on $25.
--In just 2.5 hours, the Energizer Power & Play Charging System for PS3 charges up to 4 controllers simultaneously.
--Charge 2 controllers on the station and 2 more with USB cables (sold separately). Includes UL-approved AC power cord.