BG-E5 Battery Grip For Canon Rebel XSi, EOS 450D, EOS 1000D

Price:  $78.03

Battery Grip for Canon EOS 5D Mark II

Price:  $78.03

Vertical Shutter Battery Grip for Nikon D60 D40 D40x

Price:  $37.99

External Flash Battery Pack for Nikon SB-900 & SB-80DX Speedlight Flash Units

Price:  $42.03

External Flash Battery Pack for Canon 580EX, 580EX II, 550EX, 540EZ, MR-14EX, & MT-24EX Speedlite Flash Units

Price:  $42.03