Gastritis meds are expensive, at least here in my country.
My gastritis med might be different than yours, also. But, if they're going to control your acidity, they're going to use one from
this class of meds. Some are more expensive than others, and their efficiency and dosage varies as well, also, side effects. Like i said.. hard to precise how much you'll be sinking in exactly. What other meds they're going to prescribe, i have absolutely no clue. It'll all depend on your individual diagnosis.