The AHCA makes health insurance cheaper for young people by making it more expensive for older people 55 - 64.
It achieves "cost savings" by passing $800 billion in Medicaid expenses over a ten-year period to the states. Costs some states can't or won't pay for.
It allows states to opt out of requiring health insurance plans to cover maternity care coverage, annual physical exams, Ob/Gyn coverage, and other health costs.
It makes coverage for pre-existing conditions devilishly tricky. Tip #1: Be very, very nice to your boss at work.

But, on the bright side, it gives the upper 10% a nice tax break.

The GOP calls for "universal access". But we already had universal access to doctors, specialists, hospitals, etc. for decades. Anyone can walk or drive to any of these medical establishments at any time. Whether we can "afford" to pay for services rendered is the question.