That depends on a lot of things, including your experience level, your local area (assuming that you are focusing locally,) and the types of clients you want. If your heart is with small business owners, it makes sense to charge small business prices. If you love working with corporations -- and you have some experience under your virtual belt -- you can charge much more. I know some SEO copywriters making 20K a year - and others making over 200K. It all depends on your income goals. Here are some things to think about when you're setting your freelance copywriting rates.