I believe our approach is very similar. First of all, many people can have a checked bag for free. If you buy a higher fare type, or if you're a loyalty member or you have a credit card from WestJet, you actually get your first bag or, sometimes, more that you can check for free.
Then, the price is actually very transparent. You can look it up on our website. The price differs from when you pay it. If you buy it at booking, you pay the least. If you buy it at the airport—basically, when you show up—then it is more because, obviously, we want this transaction to happen early in the process, so we give an incentive to do this early.