When looking for canoes for sale used there are several options. One way is online perhaps on craigslist or ebay. Another is to check your local garage sales, which in many parts of the US are typically held on Saturdays. Though garage sale shopping requires a lot of driving and patience since it may take many weekends of searching before finally coming upon a garage sale with a canoe for sale.
In some cases it may be easier, faster, and not much more expensive to purchase a new canoe online. Several examples of canoes available online can be found on the other posts on this site. Good luck in your search for canoes for sale used.