Starting a blog can be a relatively inexpensive proposition, depending on the level of effort you are willing to put in. There are a number of free blogging platforms available, and many blogging tools are available for free or at a nominal cost. The only real expense is time. You will need to spend some time setting up your blog and developing a content strategy, but this can be done relatively cheaply by using resources available online.
A reasonable starting point would be to look for online tutorials or articles that provide tips on how to start and run a successful blog. Once you have created your blog, you will need to devote some time each week to maintaining it. This can include making sure that your website is updated with new content, optimizing the layout and design of your website, and engaging with your audience through social media platforms. Overall, starting and running a blog can be an affordable and rewarding experience.