Mary was in the store close to closing time. She was looking at new washers. The salesman told Mary that he could give her the best deal that wouldn't cost her more than $200.00 right that minute and a small service fee thereafter. He kept dropping the price until the cost was $50.00 for a brand new washer. Mary couldn't resist the bargain and paid for the washer. When she got home and read the sales agreement she found out that she'd agreed to pay $50.00 monthly for 1 litre of liquid laundry detergent for 3 years.

What Act applies? What kind of unfair practice was this? What can Mary do?