Yes, there are and these include maintenance, updates and hosting services (to name but a few). Domain registration, SSL encryption certificate subscription renewals, SEO and digital marketing are also part of this. Continual or revised design features to keep your website up to date is another facility to factor in, especially when subsidising cost overall. Combining these as a package often helps to unify the entire process and make it more economical (not to mention affordable in the long run).