How much would one normally charge for building a website with a host such as Wordpress?

Although I advise you to use project-based pricing, it's important to determine how much time each 5-page site will take you. So, do a test run! If the site takes you 1 hour to build and you feel the work is worth $50/hr, then charge the business or individual $50. If it takes you 5 hours to build and you feel the work is worth $50/hr, then charge the business or individual a flat rate of $250.