...A week after Keith and Patti had moved into their new house they went shopping and saw a 46 inch, high definition plasma TV in the window of Amazing Hi Fi, for only $1,500.They were so impressed with the price that they walked into the store and told the sales assistant that they would immediately buy the TV in the window.On closer inspection the sales assistant realised the price was wrong and told them it should be $2,500.He apologised and asked them if they still wanted the TV at the proper price.Keith and Patti were not happy, and insisted that the store sell them the TV at the advertised price.

Keith and Patti wish to know if they have a legal agreement with Amazing Hi Fi to purchase the TV for $1,500.

NOTE - in ILAC answer

given case- Pharmaceutical Society of Great Britain v Boots Cash Chemist - Invitation to treat

An offer must be distinguished from an invitation to treat

An invitation to treat is an invitation to consider offers and cannot create an agreement, even if there is a purported acceptance

Invitations to treat can include:

Display of goods in shop windows or on shelves

Pharmaceutical Society of Great Britain v Boots Cash Chemists [1952] - sale of medications

Shop can always refuse at point of sale (why?)