A small web server that costs about 20$ per month can serve about 3 million WordPress page views per day. Let's assume that you have to run a small website that generates about 1000 views per day. This means that you could theoretically run 3000 such WordPress pages on this server.
You could run 1000 pages on this server, which would result in 2 cents per WordPress page per month.
The above calculation is of course a bit optimistic because the traffic is typically not equally distributed over the day and some page views require more computing power than others but this is just to give you some idea.
According to Forbes, there are nearly 75 million websites using WordPress. This is more than 25% of the world's websites. According to WordPress, more than 409 million people view more than 23.6 billion pages each month. This makes roughly 10 page views per WordPress page per day on average. A website with 1000 views per day is already well above the average.
Don't pay for customer support if you don't need it!