We picked up a set of these Kithcen Aid brushes at Costco in Melbourne for $19.49. The brushes all have a detergent reservoir as part of the handle or body of the brush. To dispense the detergent you squeeze the handle or, in the case of the small palm brush, bush of button on the body.
After some time using these brushes we found that the scouring pads on the sponge head tend to detach from the sponge itself after not a lot of use. I guess you could keep using the sponge, but it defeats the purpose. The brushes themselves are good, but I would prefer a stiffer bristle (might just me my bad cooking).