This is very late, but here’s what I’ve found.
Teachers:
Alison Vardy (www.alisonvardy.com)
Rita Costanzi (www.ritacostanzi.com)
Elizabeth Volpe (evolpe-bligh@telus.net)
Groups:
Winter Harp (Lori Pappajohn) (www.winterharp.com)
Celtic Woollens (www.celticwoollens.com, I think – check Mytelus.com/phonebook)
Harp Stores:
Aoyama Harp (http://aoyamaharp.ca)
Northwest Music (www.northwestmusic.ca)
Prussin Music (www.prussinmusic.ca)
Long & McQuade (http://www.long-mcquade.com/)
Other:
Celticharper.com lists further Canadian resources in addition to being someone in Ontario (vs BC).
If you’re looking for private used harps, try buyandsell.com.
If you want to know more, I suggest contacting the people above. At the very least, the staff of Celtic Woollens or Ms. Costanzi and Volpe might be able to point you in the right direction.