CRS, good luck with your search.
Corgi's will more often than not get adopted the day they arrive at an SPCA, which is rare enough as it is.
Breeders are far and don't always have available pups.
We ended up getting ours at the metrotown pet store. Ya we overpaid and and there's always criticism against buying from pet stores, but at the end of the day it was the only place that had one available and it was the exact color my gf wanted.
Try asking here or going to one of their meets. Me and my gf go a few times a year.
Corgis of BC (Burnaby, BC) - Meetup