I think you're right to expect a $500-$1,000/month range.
We pay $657/month for two adults (about $8,000/year) with a $9,000 deductible in network ($4,500 each), so approximately $17,000/year. This does not count a few insane $1k+ bills because only 40% of most services are covered, co-pays, or tax deductions/credits. We do not have dental or vision coverage.
We obtained our plan through our state marketplace, Covered California. It is a BlueShield PPO plan-that-actually-isn't-a-true-PPO with an HSA (tax deduction). We do not qualify for an ACA subsidy, or did not in 2015, at least. I'm working on that for the 2016 tax year now that we're FIRE.
We set up the HSA account with our credit union, and contribute the maximum every year since it's not like an FSA (you don't need to use your HSA funds by any particular time). We use this to pay co-pays, bills, vision, dental, any necessary prescriptions, etc. Fortunately, at 39 and 39 years of age, we don't have many of those yet.
Because we have taken on some (very) part-time consulting work in FIRE, we count as self-employed, and our monthly health care premium is tax deductible if our business has even a modicum of profit, which we ensure it does so that we can deduct our premiums (it's worth it). Feel free to message or email me directly at eviewalczak@gmail.com if I can be of any help on details.