Whether a web hosting account meets the system requirements of your sites and how easy it'll be for you to manage that account are two very important matters. In case you experience any issues or your sites simply cannot work on the web hosting platform since they were designed to run in another system environment, it would be rather unsatisfying if you cannot get a full or prorated refund and various providers out there have such policies. This way, you will end up losing funds as you will not be able to use a service you have paid for. To be on the safe side, you'd better check the refund policies of any service provider before you buy an internet hosting plan, so if you cannot work with the account or simply decide that you don't want to use it for any other reason, you can request your money back.