Okay, there's some disagreement about terminology here. Does "hidden" refer to a tax or fee rolled into the price? Or does "hidden" mean "only visible later, at

Okay, there's some disagreement about terminology here. Does "hidden" refer to a tax or fee rolled into the price? Or does "hidden" mean "only visible later, at checkout?" Guess it depends on whether you're talking about tax being hidden, or total price being hidden. > Sales taxes that are not included in marked prices are a form of hidden fee, and reduce the visibility of prices. No disagreement there. Separate sales tax makes every price a computation, and the local optimization is to remove all that computational overhead. I'm not sure the local optimum of invisible tax is a global optimum, however. General public awareness of taxation might be worth the cost in the long run.