That's great MSN! I hope your GM goes ahead and launches - .ca needs the profile of more marketplaces and services.
Newsletters - I accept name submissions in my weekly .ca newsletter DomainAssets.ca I launched just 8 months ago and subscribers are growing (subscribers are mostly resellers so no "end user" type of sales).
Dropwizard was running a newsletter that periodically had .ca's for sale. No recent issues so I don't know if he's taking a break.
Domain Convergence conference in Ontario ran an auction last year that featured .ca's I thought it was a good start for the first one, and I hope they do it again this year (event is in August I think).
Myid.ca ran a few successful .ca auctions with "end-user" type sales, but haven't heard any updates in months.
Other auction houses are beginning to feature the odd .ca (ie. Aftermarket.com ran one last week and sold a decent .ca)
Forums - Dnforum.com I think has the most active domainer market for .ca's, but Namepros.com has a .ca thread and the new cctld.com forum has launched with a .ca sales thread.
Online marketplaces such as Sedo.com, Afternic.com and Pool.com sell .ca's but not alot of sales
I hope this info helps. Cheers!
Jim