bruce has the right of it- the airsoft market pops up and down often... but I would hardly think that one or two people selling off stuff 'cheap' would bottom out the whole thing.
Its simple supply and demand here in Canada, and now the supply seems to be better you simply cant demand what you could when there were few retailers. If supply can truly be met with good retailers (and a ton of CANSOFT on the market) then prices will only get more reasonable.
I see it as good for the sport (if somewhat bad for people who paid $500CAD for a $200USD gun and can now 'only' sell it for $350CAD lol). But then thats the free market economy and few people actually see a full 100% return on any investment really.