In order to differentiate ads from those of competitors, advertisers should:
Include prices and promotions
mention competitor offers and prices
use exclamation points and words in all capital letters
use special character, such as asterisks or hashtags
People often use Google search to make a decision about something. Give them what they need to decide. If you have a limited-time discount or stock an exclusive product, say so. To effectively reach potential customers, your text ads should be specific, relevant, attractive, and empowering. you must include prices, promotions, and a call-to-action in order to differentiate ads from those of competitors.
You can read more here: https://support.google.com/adwords/answer/6080580?hl=en&rd=1