Online media buying rates are a function of several factors. These are market supply and demand and click rate performance and CPM. The supply side comes from the impressions that the media owner offers and the demand side comes from the level of media buyer demand for that inventory. As demand for higher quality sites tends to be higher than that for lower quality sites, CPMs tend to be higher on higher quality sites. As online display advertising campaigns are often evaluated on a cost per click basis, you will also need to make sure that the CPMs you pay will deliver your target cost per click at the click through rates delivered. Let’s look at some examples:
Online display standard banner
The standard 468×60 banner is the most common format in online display advertising. Unfortunately, this has given it a “wallpaper” quality which means that it is not particularly effective. Whenever planning to buy an online display advertising campaign you should bear this in mind. This is a low impact, low response format and you buying rates will need to reflect this. Consider that you may be seeking a £1.00 cost per click. If a standard banner format has a response rate of 0.05%, then you will need 2,000 impressions for every click. As you are budgeting £1 per click, you cannot afford to pay more than a £0.50 CPM if you are to generate your CPC target.
MPU – larger format ad
MPUs are a much higher impact, higher response format. An MPU can easily deliver a 1% click through rate. This means that you only need 100 impressions to generate every click. So if you are targeting a £1 CPC, you can still achieve this if you are paying a £10 CPM.
Online awareness advertising
If you are not seeking a pure click-based ROI but want to increase brand awareness or consideration amongst, for example, affluent business audiences, you will have to place your creative message on sites popular with these audiences. Typically more upscale and leading business sites have demand levels that are higher than supply which enables media owners to increase their CPMs regardless of factors like click performance. Here you are investing on brand association with quality editorial content. Whilst the payback to this type of activity is not measured as short-term clicks, a longer term objective to change brand attitudes can be delivered through this type of activity. Banner and MPU formats will be more expensive and you can expect to pay £5-£25 and £10-£40 for banners and MPUs respectively in these environments.