Check your local parts stores. I moved recently into a new place with a shop. The shop had one mounted on the wall and while I don't drink much, I kinda thought it was a neat idea as he had a fridge right next to it. After paying more attention to it, I've seen them local in hardware stores for very cheap. I'd look local first to support your local economy (cheap as it may be) then look online. These are a very cheap item so I've seen lately and I'd be really surprised if you don't find one around town.
Best of Luck,
Mike