How much revenue a conversion generates is important when determining a budget for a campaign. In the simple case of a sale on an ecommerce website, that number usually is the average order value (aka AOV) you receive from a conversion:

Average order value = Total revenue from orders / Total number of orders

If a website generates $10,000 of revenue from 25 orders, the average order value is $400:

Average order value = $10,000 / 25 = $400

That revenue only comes from customers who actually convert, of course. The basic conversion rate equation is:

Conversion rate = Total number of visitors who take an action / Total number of visitors

Two elements control the success of paid online advertising campaigns:

  • The cost associated with running the campaign. There are usually two costs you must account for: the cost to drive traffic to the landing page, and the cost of designing and optimizing the landing page.

  • The revenue generated by the campaign as determined by its conversion rate, and the revenue generated by a conversion.

When creating a campaign, you will need to plan and budget for both of these elements. Several scenarios could affect the campaign’s profitability, so you have to consider the following questions:

An example may help show how these questions connect. Let’s say a company has been selling widgets in the traditional market for more than 10 years. Based on historical data, the company nets $75 of profit for each unit sold. The company decides to experiment with selling widgets online. The marketing team will run a pay-per-click (PPC) campaign that directs prospects to a landing page where they can place orders for the widgets.

In planning the campaign, the marketing team makes the following assumptions:

  • The widgets landing page should receive 100,000 visitors during the campaign.

  • The company never ran any paid advertising before, so it is estimating the campaign to start with a 1% conversion rate.

The profit a campaign is expected to generate is important when determining its marketing budget. In this example, the campaign is expected to generate $75,000 in profit:

Number of orders = Number of visitors * Conversion rate
Number of orders = 100,000 * 1% = 1,000 orders
Gross profit = 1,000 * $75 = $75,000