Guidance of getting Solar for my Home

I am buy a Home in Massachusetts and i was wondering what would it cost to have solar panel installed on my roof? The house gets plenty of sunlight and I was hoping of if i could get an option to have solar panels installed for free now and maybe 200$ per month payment. Are such options available? I am not googling it as my feed with flood with solar suggestions and I have had bad experience where the final charge was much different than what was promised. So i am asking the residents for some suggestions based on their own experience