I've left Hawaii twice (PCS) Each time I spent at the Hale-Koa and each time my rate went up when my TLA days kicked in. At the time, E5 was $85 or so a night, on orders, max rate to over $100 a night. They do it cause they can.
I bought a 1997 Alpha, yup 3,000 bucks. American = money so they charge it cause they get it. You can hold out, but you'd be walking or riding the bus.
JFC mess is pretty descent food for a little money. We pay 6-8 bucks for a crappy meal on Capo? Why, cause they can get it. MWR premiums, rent premiums get pushed to the consumer.
Dry cleaning. Is Ralph cheaper? I don't know, never used him but I know lots do.
Veggies: EXPENSIVE and crappy at the commissary. Markets or Ipercoop for me.
Not everything is big money, usually things tied to the base are big money.