Google AdWords lets you control how much money you’re going to spend. There’s no minimum spending requirement and the amount you pay for your Google AdWords is solely up to you.
While Google AdWords doesn’t have a minimum-spending requirement, there is a normal, one-time activation fee. You control your costs in three different ways: Daily budget, bid and ad quality.
Your daily budget is the amount of money you’re comfortable spending on a certain campaign each day. Your budget sets the most for your average daily spend over a month. You can edit your campaign’s daily budget whenever you want.
The more common bidding option you have to choose from is cost-per-click (CPC). CPC bids will determine how much you’re willing to pay for each time a person clicks on your ad when it shows on Google or one of Google’s partner sites. A higher CPC bid will allow your ad to show at a higher position on the page.
Ad quality is the most important part in your Google AdWords campaign and deciding the amount you’ll pay when someone clicks your keyword-targeted ad. The higher your quality score, the less you will pay for a given ad position.