It doesn't matter how much it costs anyone because your circumstances and needs will be wildly different than others, and you may qualify for subsidies.

I would figure out how much your current health insurance is (both the employee and employer contribution). This is the amount you would pay if you quit your job and went on COBRA. You can be on COBRA for 18 months and it's typically cheaper than finding an equivalent plan on the marketplace. That gives you time to grow your business and figure out a long term health insurance solution.