<prompt> Human: Ive seen places, mostly standalone shops, salons, etc charge you tax on a purchase or service but not if you pay with cash. Why are they allowed to do this?Does it make more sense to just pay with cash if the cost of the service or product is high enough?  <response>: Are you sure its tax theyre not charging you? Could they be charging you the 2 fee banks charge them when you use a card? 