A sales tax is an income tax. Whenever a grocery store sells an item, they pay 10% to the government. Are you accounting for other ways grocery stores can make money outside of sales (I’m ignorant on what those could be), or do you mean that grocery store managers (individuals) should be paying higher personal income tax?
edit: I have learned that a sales tax is technically something the consumer pays, not the grocery store, but that seems more like semantics to me. It shouldn’t matter if you tax every individual item 10%, or the total sales number 10%, it will work out to be the same.
Yes, it is the only grocery store for kilometers, and the only option for me to personally shop at.