Did you get a printout of the current camber settings? It may be that the front is okay, and only the rear is out of spec, or vise versa. Just because it's out of spec doesn't mean you HAVE to get a camber kit...you can get away with some negative camber as long as it's not real far out of spec.

If they didn't do it yet, just have them align it, and set the toe right, and leave the camber. that way you can see exactly how far out of spec you really are.

If you are really low (lower than 2.0") then you'll likely need some correction if you want to get the most out of your tires.

Search here on the board for the common brands and what people have had success with.