I think, primarily, you have to know who your " customers " are before you can price it. For example, if your customers are the ones who have $2,000 salary/income and you charge $1,500 - you won't get any sales. So, I see that you offer SEO services and analysis.
Now, what you need to do is to decide which kind of clients you want to have " low end " or " high-end " - if you choose low-end clients, I suggest you break those services down to small services. For example, keyword analysis, so that you can keep the price down.
For high end clients, you have to have a great design for all of those services and explain in detail because it comes to big bucks, it's harder to get people to pay for you. Gather your previous client's testimonials, proof etc. and go after your big fish.
From what I can see, I don't think you are a good explainer or salesperson - at least in English (because of the way you posted your question). So, you have to improve on it otherwise, you won't be able to get big bucks from English speaking people.