How quickly does a firm react to broken elasticity?

Everyone knows the guy pushing a wheelbarrow full of money to buy a single loaf of bread and the economic repercussions behind it: item is too expensive no one can buy it within reason. Obviously bakers had to adjust their price per loafs after that.

What about when it isn't as dramatic?

When prices for needs are so high the majority (50% or higher) of consumers decide not to buy it. How quickly do sellers react?

I know with foodstuffs the product will rot on the shelf, so they have to act quickly. What about basic clothing, toiletries, etc (products with longer shelf lifes)?