my wife and I pay about $2400 per year. That covers both of us wherever we practice (malpractice), coverage of our equipment (Gdx, Retinal camera, etc.), general liability (2 mill/4mill), auto coverage (workers doing company business) plus theft, money if we are forced to close/relocate (been there, done that thanks to Hurricane Rita) plus some other stuff. We get it through Zurich North America "optometric protecter plan".