Medicare is not normally dual priced item although some shops are cheaper then others. I have been geting all my Meds here for a couple decades as I'm reimbursed.
I did look into a prenuptial and with 31 years experience, married to a Thai who passed, elevated rishs, looked at the family I was marring into, and decided to roll the dice and make my second marriage a partnership like the first one.
We just started year 17 and financially better off then when we started.