i want one of those box things that you plug into the wall and they have little leads off them that are good to power guitar fx pedals.

i mean like this
http://www.jimdunlop.com/products/electronics/mxr/products/dcb10.html
BUT
like, cheaper.

so does anyone know any other manufacturers, or a technical word for such a device to make finding one on the internet easier?
huh?