Around here people are charging anywhere from 82 - 150/hour for on-site labor; 60 - 75/ sample for non-viable sampling; 100 - 125/sample for viable sampling; variable travel expenses; and a starting price of 150/protocol. I did a lot of research before opening my doors and these are the lows and highs that I got going into it.
I only ran into a handful of companies that charged labor, materials and sampling fees all in one. Those ran from 150 - 200/sample.
My research covered a three state area in the Midwest United States and professionals from home inspection, indoor air quality, and industrial hygiene type offices. I hope this helps.