I am working on a site for a non-profit / charity and they have a number of domain aliases that they use to access the site. For example if they have a particular campaign it may have a unique domain name for awareness purposes but it will point to a page on the main charity web site. So in effect they may have quite a few domain names for one site. Does this mean they would need to purchase the top price license or would a single license suffice since they only have a single word press instance. Thanks!