I also agree that rental lines are a downer, but if you're getting the whole package including lesson and rental I don't think you have the option to rent the day before. So that will probably add to the price.
Any way you look at it, it's an expensive proposition.
This is why I've abandoned both downhill skiing and snowboarding and taken up x-country. No lines, no long freezing lifts, no expensive lift tickets, less stress.