Aside from working paid and organic search words into your ad copy, make sure to convey the benefits of your products and services. With each query, searchers look to solve a need. Finding a way to express those benefits by emphasizing emotional needs can work best, according to Kevin Lee.
Lee explains it's not always a good idea to lean toward pricing as an incentive to gain clicks, though it may seem like an obvious choice, especially for retailers. He details a list of other possible benefits such as free trials and shipping, you might want to consider emphasizing.