Most business owners know they need marketing. What many don’t know is what they should be paying for it—or what they should expect in return. So when an SEO agency proposes a $3,500-a-month plan, how do you assess whether it’s a smart investment or an expensive gamble? Do you know how many new customers it would take to make that spend worthwhile? Do you even have the data to answer that question? This week, Shawn Busse says too many owners are making those decisions in the dark. He offers a practical framework to help you do the math to evaluate marketing proposals, set realistic expectations, and decide what’s worth spending—and what isn’t.