It is relative to the size of company, guarantee, size of job and prep work needed. The larger the job the lower sq foot cost.

Chuck

The price u charge is relative to what the area can handle and how much u want to make on job.

Thank u for negative responds to my answer.

If u wrote as if u were talking to a person and stated exactly what u needed, u would get an answer that u might like(maybe but doubtful).

Good luck

Chuck