My expectation on the first release of a new system is low, as I have been doing computer engineering work for 30+ years. But I tried on day 1 just the same. I went to healthcare.gov and was guided to nystateofhealth.ny.gov. Day 1 was a flop. I got as far as putting my address in and hit a problem. The code brings up a list of counties and cities based on the zip code, but did not appear to recognize my zip. That presented a wall for me.
So, I tried again today. The bug has been fixed, and I was able to complete the login. After filling in a few pages of personal information for myself and my wife, I was presented with 60 health insurance selections. For myself alone, rates ranged from $317 to $620 per month for Bronze through Gold plans. I compared a few details. Not ready to select as yet, but it seems to work.
A couple more issues still to be fixed. They have a space where they can filter the plan choices based on your doctor and your local medical center, but they don't work. You need to check on the insurer's site to confirm if your own doctor and hospital are in-plan. I assume that could eliminate some of the 60 plans I was offered. I'll give them a couple more weeks and see if that gets fixed, but I could move forward right now without it.