Just a little nerd talk as I think of it. Any questions just ask.
Things you will be purchasing in order to run a web site from us or any other company:
1. Yearly DNS fee = $8.95 to $12.00 on average per year. Example -> .com, .org, .net
2. Monthly hosting fee where your files for your site will be held. = free to $1,000′s. Average is around $15.00
If your thinking about the cheap web hosting companies that offer free domains with hosting, yes we have heard… Their hook is they own the domain name and you would be at there beck and call no matter how bad their service might be. Your domain name really should be under your control 
Below varies greatly depending on your vision/goals. Usually la’carte or ad-dons. No particular order.
Site builds and design
Graphic design
Content management
Copyrighting Original articles
Site maintenance
Script functions
SEO
SEO continued strategies
Marketing
Branding
Ad strategies PPC CPC…