Is this selling your website?

I would just like to know if you run a website, for example, you can log in and live stream while you gamble like twitch. Only the design and the functions are a bit different. Is it possible, for example, if the site is doing very well, the sale and if so, something like this from?

Yes, there are various sales websites for websites. Either only the domain or content and possibly even additional information such as Facebook group etc