I was window-shopping for a necklace when I saw one I liked in a shop window for $100. But when I went in to buy it, the shop assistant apologized and told me that the price was really $150. I thought that the advertised price is what I should pay. Is that right?
Where there has been a genuine mistake as to the price of the item being sold, the shop owner can change the price to sell the item at the higher, true price. But if you have evidence that you were tricked into buying the item by its being initially offered at a cheaper price, then you may have a case against the shop. There are Federal Laws that prohibit businesses from manipulating the retail price to unfairly attract customers. The onus will be on you to show if the shop owner tried to trick you.