There are a number of companies that make M60 AEGs.
Star M60 should be right off your list, any Star M60 would be fairly old stock. Star had a split with its manufacturer, who now produces product for itself under the brand name Ares. Ares stuff represent a general improvement over that of Star', if you're keen on an economic, modern M60.
VFC and Inokatsu make M60s as well. VFC makes more modern variants, Ino makes the 'Nam stuff. They're top notch and hella expensive (not just in Canada).
You can probably get any of the above through the classifieds, but it'll take a while. Which one you get heavily depends on how much money you've got.
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."