I check Craigslist, Facebook & eBay every day or two, and Kijiji every week and post to the GCOTD thread.
I don't find every G/C on search's, as some are just listed as "Boat for sale" or don't come up in search until a few days to weeks latter.
I do search our local CL for G/C's but can't do that for entire country. Not enough hours in a day … LOL
I search .. "glastron carlson" , "glastron" , "glasstron" and sometimes "carlson" & "hammond"
I've been using "Searchtempest" for CL & eBay ..
https://www.searchtempest.com/and Kijiji for Canada ..
https://www.kijiji.ca/Also the Glastron groups and Marketplace on Facebook.
Everyone dreams of finding a G/C that was used once and put away in a garage for 40 years, and is 3 miles from your location for $5000. Chance's of that are pretty slim ..
Then there's the boat that's "Totally Rebuilt" which could just be a piece of plywood over a wet, rotted floor and a aluminum plate on transom.
The perfect G/C is out there .. It's just on the other side of the country ..
Looks like your in Canada, so prices are a bit higher up north.
Price's in general are increasing for any Glastron / Carlson.
Some of the nice one's are going for well over $10,000 now.