While it is very true that "what the market will bear" seems to play more of a role in determining prices than accounting (looking at $tarbucks)
That said, I believe your first basic step is to do your accounting - put all your expenses into one formula and figure out your CODB.(Google it) NPPA use to have an online calculator to help you do this, but honestly you should create it yourself in excel. Rent, equipment, computer, ISP, Utilities, Retirement, Insurance, etc.. Even if your spouse affords you this hobby you should still factor in all the costs so you can confidently quote your clients realistic and honest prices. Honest for you in that you are making a dollar at the end of the day not paying your clients to photograph them.
What if I told you to charge $700 per session, or $1,600, or $3,200 could you go to your client and look them in the face and quote these rates? You need to know your CODB so you can be confident why you are charging what you charge. The flip side is what if someone asked you to bring $3,500 worth of gear out to their location and do a half day of work at their location and another half day at your office/computer and only wanted to pay you $100 is that worth it? Can you hire anyone else in your community for $100 using their equipment, software, computer, web hosting, etc..? You drop a lens on a paying job your home owners insurance will not cover it.
The beginners problem with CODB is that they overestimate how many shooting days a Pro works - My suggestion would be to keep this number under 70 days per year, until you can prove to your business otherwise.
Everyone has a camera, hiring a photographer is a luxury service don't be afraid to charge a realistic price. I just drove through Missouri and the number of newish/expensive pickups is plentiful in those farming communities. Not to mention overpriced fishing gear and hunting supply stores. My Mom still has my high school portrait displayed. I have many pics I took during those years but that's the one she still has up.
Photography has value, maybe not immediately obvious like a new cheerleading outfit to a growing student but it has a value that can last through the years and it is up to you to fight for the value you want placed on your images.