It is and it isnt. The software version from wordpress.org can be downloaded but that needs to be self hosted. People have trouble doing that because it beats the non technical aspect of Wordpress (which is why and how it caters to users).

The wordpress.com version, which is sold by hosting providers, Bluehost India being the most prominent because of its understanding of Wordpress and having superior servers, infra etc, sell WordPress hosting at a price. So, that's how it is. If you want a good version, where you can pay a premium, I suggest the above brand for sure.