There is no definitive answer to how much a one-page website will cost. It depends on the complexity of the design and the features you want to be included. You could spend anywhere from a few hundred dollars to a few thousand dollars, depending on the size and scope of the project.
One thing to keep in mind is that most one-page websites are static, which means they don’t include features like a blog or e-commerce capabilities. If you need those features, your costs will be higher. Also, if you need help creating or designing your website, that will add to the cost as well.