Expensive? Welcome to Trump tariffs. This will end badly if they persist but with NAFTA still in chaos and our bunch of goofy Liberals doing the negotiating, don't hold your breath.
If you are going with 304, When they are new, apply a sealer like Rejex then get a good supply of Collinite Metal Wax on going. Both will cut maintenance way way down. Also try to wipe them down after a cruise.