You paid much more than you had to.
First, you can find the air filters for even less.
Metro sells the engine air filter for $12 and the cabin filter for $15. Second, it's an easy DIY job -- takes two minutes max and no tools.
Beyond that, dealers are notorious for selling you stuff you don't need when you say, "##K mile" maintenance. Their package often includes items the manufacturer's package doesn't. Instead, show them the maintenance booklet for your car and tell them you want
only what's listed.
To save even more, consider doing oil and filter changes yourself. It too is an easy DIY job, and it assures you that it's done right. There are many reports on the forums of dealers mishandling even that simple job, such as by overfilling.