Which kind of project? What will you offer, sell something, give informations or offer a service?

Information sites are cheap, you just need to set it up, pay for a domain, you can do almost everything for free, but you need knowledge to give legit informations to people and to make it interesting to bring even more people to your site.

If it's a service site, like an exchange, it's more complex and you need informatic skills, Crypto Currency experience, you need some people working for you, security levels, must check if it's allowed on your country... Really difficult.

A shopping site isn't easy too, and only profitable on long term (if you are able to run your business until there).