Oldish thread, but they have some homebrewing stuff at Spagnol's on Derwent Way on Annacis Island. They don't have much, but have a few Wyeast smack packs (albeit quite old) and some equipment. There really isn't anywhere like Dan's in the Lower Mainland as far as I know - in terms of grain, hops, etc.
I've visited other homebrew stores in the PNW and now realise how lucky we, as a community, are to have Dan's.