The average cost of living for an American [edit]. 1  $20,194 per person per year according to Bureau of Labor Statistics (value given divided by 2.5 average household size ('consumer unit') - [1].
Their annual salaries vary according to industry and place of employment. Concrete finishers made a mean annual $39,370, with the lowest-paid 10 percent earning $23,180 yearly, and the highest-paid 10 percent making $62,600 per year.
The cost to install a 100-square-foot concrete countertop averages between $8,500 to $10,000. Concrete countertops have evolved since the 1980s. They used to be poured into a mold; now they are precast and delivered as finished products.