I think cheap is relative term when it comes to A/C capable solar.
I have a built in Onan 5500 lp genset. I also have 80#'s of lp on board. Push a button and I can have A/C anytime anywhere! No set up, no genset to haul no gas cans. That genset was a 7K factory option.
You could save a few grand with a after market DIY install. But still you will pay 5-6 grand for push button power for A/C anytime anywhere.
With that in mind $7K is not an unreasonable figure a solar package that can provide push button A/C anytime anywhere. Solar will also give you the ability to escape genset rules.
You can have A/C in places where gensets are not allowed.
You can book non electric sites or boondock with ease.
If I were to do it again I would stronly consider a large A/C capable solar package vs. a large built in genset.
