Steve's right, dealer is trying to get $895 for about $10 of wax. It's not critical, I didn't wax my '96 Suburban, it still had shiney paint last year when I sold it. If you really want to, here's what Consumer Reports said (they don't have brands, last time they tested they like Turtle Wax and several others).
Good for cleaning, gloss, and durability.
But they can be more difficult to apply evenly and buff out. Most dry to a haze within about a minute, but this varies with wind, sunlight, and thickness of application.
Good for ease of application.
But overall performance is not as good as with liquids, and it can be difficult to remove wax from the container as you near the bottom. Paste waxes usually dry to a haze within 30 seconds.
Good for new cars with excellent finishes. Also for convenience, plastic compatibility, ease of use, and spot waxing. They’re quick to apply and many can be wiped off without drying.
But they are not good for cleaning and are the worst for durability.