I don't understand this...pricing for shuttlecocks varies from region to region, country to country.
Here we have someone who said "1 tube hardly last one session" and everyone seems to agree. I would ask, what is one session? one hour, two hours, 3 hours or more?
Let's say you play doubles (4 players) and assume that you use 2 shuttles on average per game and each game last 15 to 20 minutes. So a tube of 12 shuttles will provide 6 games which is an hour and a half to two hours so if for a 3 hour session, you will use one and a half to two tubes (24 shuttles) with 4 players, that's half a tube each and at a price of CAD$20.00/tube, that's only $75.0 to $10.00 for 3 hours of activity plus the cost of drop-ins.
I would say that it's pretty decent. Not cheap but not too expensive as a round of golf can run you $50.00.
I would say that wasn't too expensive.