Registries and registrars usually charge an annual fee for the service of delegating a domain name to a user and providing a default set of name servers. Often, this transaction is termed a sale or lease of the domain name, and the registrant may sometimes be called an "owner", but no such legal relationship is actually associated with the transaction, only the exclusive right to use the domain name. More correctly, authorized users are known as "registrants" or as "domain holders".
Used 000webhost back in ye olde days. Back then it was the only legit free host, and others were data scams, or so it seemed anyway, because the computer antivirus (old Avast) could go into a meltdown once you visited their websites. Looks like the times have changed – but I’d keep tenacious about my personal data around most of these companies. If they don’t make money with hosting, it’s anyone’s guess how they make that money..:)
Moving to another website consists of transferring the website’s files and databases, configuring your site with the new host, and directing your domain’s DNS to the new host. Once you pick a new site host, they can usually help you out with this process. The cost will depend on the host you’re switching to, but it will probably be anywhere from $150-$400.