Comment by dspillett

Only if deliberate. If the incorrect price is corrected as soon as the problem is noticed then that is (legally) fine. If the incorrect price is left displayed, or was put up deliberately to draw people in, then it is bait & switch.

The other solid bait & switch is advertising a product that they don't have any of to sell, in the hope that you'll come in and buy something more expensive (or lower value) instead.