Amazon.com has the Targus Digital TG-BGD40 Battery Grip for Nikon D40/D40x/D60 for $35 with free shipping. Use coupon code TARGUSO9 to knock it down to $26.
FEATURES:
* Targus Pro Battery Grip for Nikon D40 D40X D60 TGBGD40.
* Functions as both a high-capacity battery pack and a vertical grip.
* Extends shooting capacity by accepting two ENEL9 battery packs.
* Optional battery magazine holds six AA batteries for emergency power.
* Grip enhances camera stability during vertical shooting and includes a convenient vertical shutter release button.
* Compatible with Nikon D40, D40x and D60 DSLR cameras.
Amazon.com: Targus Digital TG-BGD40 Battery Grip for Nikon D40/D40x/D60: Camera & Photo
Targus Digital TG-BGD40 Battery Grip for Nikon D40/D40x/D60 $26 + FS 
