You have too many variables in your scenarios.
Just for the hell of it I just did some calculations on Kaiser calculator and I used a W Virginia zip Monroe county (I believe you said once upon a time you live in WV) and today a couple both age 60 at $70,000 and this is the results:
Estimated financial help:$3,013per month ($36,156 per year) as a premium tax credit. This covers 88% of the monthly costs.Your cost for a silver plan:$430per month ($5,159 per year) in premiums (which equals 7.37% of your household income). These are today's figures.
If you did not use healthcare.gov or an insurance agent to walk you through it you may very well have. Most people that took it upon themselves on healthcare. gov screwed themselves.
I can remember before obamacare selling plans up to $20,000 deductibles to very wealthy people, no copays or nothing until the met deductible. Yes, those plans were cheap but they had to medically qualify