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.
Colgate charges about $1.76 for the brush that cost 65 cents to make. That figure reflects advertising and promotion costs. Depending on the brand and type of toothbrush, annual advertising costs can range from $6 million to $17 million. The retailer can mark up a toothbrush 28 percent to more than 40 percent.
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.