iHeart AdBuilder will select the stations and times-of-day to play your Audio Ad where your primary customers are most likely to listen. However, you may decide to play your Audio Ad on only one single station in your market.
If you decide to target only one station, you may limit how effectively you reach your primary customers, and you may also not reach your budget goals. Another business owner may also be targeting this station, and depending on the length of your Campaign duration, it may be difficult or impossible for your entire budget to be spent on that station as a result.
In the case where your full budget cannot be spent during your Campaign duration, you will notice that your weekly invoices will be less than what you provided for a budget-goal.