> This isn't free. It's not free but it is negligible relative to routine relabelling. How many times do you think the tax rate changes per year? Maybe twice,

> This isn't free. It's not free but it is negligible relative to routine relabelling. How many times do you think the tax rate changes per year? Maybe twice, at most, if the government budget is facing some major upheaval. More likely is every few years. Compared to the number of times the store will put things on sale or change the prices, that is negligible.