Classic airsoft guns are considered to be more reliable, (but that could also be partially opinion) and easily adjustable fps are the 2 Pro's of Classic Airsoft.
Probably the cheapest way of acquiring a Classic Airsoft gun, so to see if a Retailer would be willing to work with you to import one from the classified on classicairsoft.org. But thats a pretty big IF, not many retailers like do customs orders to begin with.
I do see a lot of used classic airsoft go for starting $200USD, with the high end of $1000USD. But that is not in Canada