A new guy!
Welcome to the club Martin! You have found one of the best flying clubs anywhere. I too have been looking for quite some time for a 150 to buy.
One of my favorite websites is Barnstormers but I looked at all 5 pages today and only found 1 in Ontario. There are a few in Montana but don't know how much a hassle it is moving it to Canada.
Another good website is Planeboard. I really like this site as well....but it doesn't have that many planes. I did find a 150 in Alberta. She looks nice but is not a late model as you requested...here's the link:
http://www.planeboard.com/cessna/150/ixx4yaD9You know a lot of people looking to buy or sell a 150 look at the buy sell forum, but you may have better luck posting on Cup of Joe. You could start a "new subject"...the title A New Guy! This should hook you up with a good number of people who have a lot of experience in this area.....
My favorite model is the D/E series....in fact about a year ago one of our club members was looking for a 150 in California and I told him about an E I found in San Jose and he bought it! He loves it!
Anyway good luck and welcome to the club!
Bill