Apparently Fishlybusiness is going to be doing Canadian orders in the future, so that may actually be our first "Liveaquaria" type vendor up here that will guarantee past DOA. If you're on Facebook the local B.C. groups are the most active place and there are some vendors that post on them quite regularly.
Reef and Saltwater Aquariums of British Columbia - Community group, has some vendor posts typically on Fridays.
CORAL HOARDERS buy/sell/auction THE ORIGINAL(West coast. British columbia) - Mostly private coral sellers, some very nice, named SPS typically posted.
In terms of livestock I've purchased from
The Marine Experience out of Edmonton (my clams, some sps / lps frags) this past January and the shipping service was excellent (to Purloator depot). The owner, Neil is pretty active on the Reef FB group I mentioned above. I live 10 minutes from J&L so most of my fish have been purchased in person so can't comment on their website / shipping.