The prices aren't on healthcare.gov yet for 2019, but we got a notice from our insurance company (BCBS NC) and our cost, strangely, is going down by quite a bit - about 15%.
I haven't been able to find a link to the formulary, but our doctors are currently listed as in network (and all the specialists I can think of that we've used over the years are also listed as in network), and co-pays are the same. The hospital system we can use has changed from one large local system to the other, but from my standpoint, not a concern.