1.80 - 2.00 a sq ft all day long just for basic install. Tile / patterned laminate is extra. I actually have a 10000 sq ft apartment complex to do with just basic install.
1 Expect to pay $5-$25 for a basic battery-operated vibrating toothbrush powered by one or two non-rechargeable AA batteries inside the thick handle.
Replace toothbrushes every 3 to 4 months. Consider getting a new toothbrush sooner if you have been sick, especially if the toothbrush is stored close to other toothbrushes. When in doubt, look at the bristles. If they are frayed, they won't clean teeth as thoroughly.