Publishing a blog on WordPress is definitely not free, but it is not as expensive as you may think. There are a few things to consider before starting your blog, but the most important cost is time. You will need to dedicate a few hours each week to maintaining and updating your blog, as well as publishing new content. However, there are many WordPress plugin and themes available that can help you easily manage your blog and make it look great.
Additionally, many third-party services offer affordable blog hosting and advertising options. In the end, it is important to consider your goals for publishing a blog on WordPress and to make a budget accordingly. While it is not free, publishing a blog on WordPress is not as expensive as you might think.