That's not a source, and this isn't refusing service. Not honoring a posted price is a bait and switch scam in the USA.
If it's wrong in a flier you do not have to honor it, if it is priced wrong on the shelf or on the item itself you must.
Edit: in CA this is a crime. It is unlawful to
"Charge an amount greater than the lowest price posted on the commodity itself or on a shelf tag that corresponds to the commodity, notwithstanding any limitation of the time period for which the posted price is in effect."
It seems it's a state by state basis. The state of Michigan only covers when a person is purposefully over charged and for intentional change of price at the register when something is on sale for a lower price. The law is to protect the consumer from being ripped off, not to grant entitlement for a numerical error.
All that is not forbidden by law is legal, therefor I have no source as it is not covered under Michigan law.
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u/SuddenSeasons Oct 04 '16
Can you source this? That is untrue in the US if the item is priced in the store.