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.
On the likelihood that you do hire a pro, installation costs for a concrete slab average $65.50 per hour. If you have a poor foundation or are working on a slope, the overall cost can go up.n the likelihood that you do hire a pro, installation costs for a concrete slab average $65.50 per hour. If you have a poor foundation or are working on a slope, the overall cost can go up.