If you are thinking about how best to resell SEO to the masses, there are several things to consider before you go forward with this plan. First, be aware that many other well-established individuals and companies out there currently resell SEO professionally as well, so the competition is indeed stiff. However, talent and determination can go a long way towards allowing you to successfully resell SEO on your own, and should help you to carve out a niche in the industry.
It should be noted that any plans you design and the tactics used therein to resell SEO should always be private label or white label compliant. These terms simply refer to any methodology that eschews fraud, spam, or dishonesty in any form, so any transparent and ethical methods by which you resell SEO should be quite compliant indeed. Failing to resell SEO according to these standards can and will ruin the online reputations of yourself and your clients for good throughout the legitimate corners of the web, so be sure that you never play with fire in such a manner, so to speak!
As you design plans intended to resell SEO to others, make sure that basics such as social media, keyword optimization, and search engine submissions play a large role in any plans that you design. Once you have designed your plans accordingly and are ready to put them into action, be sure that you promote your own site as aggressively as you promote those of your clients for best results. Bear these points in mind as you move forward, and your decision to resell SEO to the masses should prove to be quite a successful one overall. However, it may take a while for you to see the success level you have in mind, so make sure that you keep trying!