Is $10,500 to install closed cell spray foam in my attic a fair price?

I wanted a sanity check on this quote for closed cell spray foam in my attic as I've never priced this before. I have another quote pending. My home is located in northern PA and is 125 years old, which means I have real 2x6s allowing for an extra half inch of insulation. I plan on finishing the attic space next year. I recently replaced the roof last year in preparation for this project. There is no existing insulation in the attic, and HVAC is not a concern as there's a dedicated unit for the space. I'm unsure if baffles are required, as the quote doesn't mention them, and my house doesn't have soffit vents. I'm also not sure if adding soffits is worth it or what the cost would be. I specified wall square footage, not board feet, when I called, but it's worth double-checking. For R-value, I'm just filling the 2x6s; anything is better than nothing since there's currently no insulation.