I'm in the planning stages for a large ICF build in SE Michigan.  I have some concerns about the soil, as the build site is not only clay heavy but there may be soil disturbance from some previous structures that used to be on the build site.  Since the house is going to have some pretty high bearing load on the footers, I want to avoid problems down the line and get a geotechnical analysis done on the site.  

I reached out to a geotechnical analysis firm in the area and they came back with a $6K+ quote for a basic analysis. That seems pretty high as my understanding is that it's usually about half that cost.  It's a firm that normally does large commercial construction, so I'm thinking that might be why they're quoting so high.  What's other people's take on this?  Is this a reasonable price or should I shop around a bit more?