You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product?
Review title: water heater timer
Product review: The WH21 was less expensive than similar items at Home Depot and Lowe's, and the shipping was free. One of the two timers purchased from Amazon was defective, but Amazon immediately shipped a replacement. The timers were easy to install and program.
