The cost of mobile SEO can vary greatly depending on a number of factors. These include the level of mobile SEO services you require, the complexity of your website and the experience and expertise of the mobile SEO agency. Typical pricing for SEO for mobile can go anywhere from $500 to over $10,000 for a single client on a monthly basis, but this is uncommon. Other mobile SEO agencies may also charge an hourly rate, which typically ranges between $75 and $150 an hour. If you’re determining how much you should spend, any mobile SEO expert will tell you to allocate about six to 12 percent of your gross revenue to establish a robust online presence.