I'm sure you have already done this, but just in case you haven't, look into a rescue site for Westie. I know there are sites on just Boxer, Great Dane, Grayhounds etc. that are just rescue sites, only.

But if you can't find a rescue dog, don't feel bad getting a dog from a breeder. If it's a breed someone has their heart set on, I know sometimes it can be hard to wait.....when you really want it.