not really, their contribution to the flavour of certain speciality ales is significant. You may just have to order them online. I know Northernbrewer.com carries them. But you could give it a try and see how it turns out.
Primary 1 - Smash 1
Primary 2 - Smash 2
Primary 3 - Belgium Triple
Bottled - Oatmeal Stout, ESB, Belgium Light.