How much does it cost to have a website?

A simple answer is provided as an estimate in the table at the bottom,

but this question is too ambiquous to get a straight answer because the concept of "a website" refers to something that has too many aspects that are complex in nature and which is variable.

A website has a specific size, a character, a colour, a theme, a purpose, an appearance, a measure of interaction, an audience and many different aspects that are all variable.

The processes of Web Design and Development are suject to so many variables that it is almost impossible to link a unit price to a "unit" of web design or development.

To complicate things even more, a Web Site should constantly be changed and improved to satisfy it's users and to remain relevant. Introducing web maintenance and improvement as a part of web development is often considered as an after thought but without it, a website will most certainly be unsuccesful. A website is a means of communication that can in many ways be compared to a conversation, when the flow of information stops, communication breaks down.

To ensure that a website achieves its goals, it should be marketed and promoted, visitor behaviour should be recorded and statistics should be monitored and analysed to determine the effectiveness of marketing efforts.  Continuous change in marketing efforts based on the feedback from statstics is the key to internet marketing success.