I have came across many good keyword but these are not available in .com but .ca domains available to register. My question is… are they worth it?

You have to be a resident or business in Canada though to register .ca’s

There is great value in .ca. Considering any .ca website I have operating gets anywhere from 25-60% of the traffic from US sources, it’s clear they get equal play on google.com, yahoo, msn etc.

But unless you can meet the residency requirements you can’t register .ca domains.

you must be a resident of Canada, or have a business here, or some kind of tie to Canada.