If you buy a web hosting account for your sites, you could find out that it does not fulfill some requirements which your script-driven applications have, or if the sites are not doing very well, you may choose that you will no longer want to run them, so you could end up possessing an account that you will not really use. In such a case, it will be good if you can close the account and get your cash back since you will not be able to use the service for one reason or another. Some companies offer refunds - full or prorated, while some do not, so before you buy your new account, it's good to check not only if the service will match your needs and requirements, but also what refund guarantee the provider has for possible refunds.