Are there any options for lowering (moderate, not slammed) that don't involve camber adjustments? That would seem to increase the cost dramatically. Do most with springs just live with the camber difference?

 

Tanabe springs will get you about a 1 inch drop. It depends on the car but some people get away with stock camber adjustments, some do not.

Lexus sells 3 different lengths for their rear control arms. The shortest ones, the ones you’d need if your camber is out of spec, are the 441.5 mm long ones.

If you drop the car any lower you’ll need to buy adjustable control arms.