You are charged for the search 0.3 WU and then charged for the list returned (items returned and each character of data returned)…there used to be a list that showed the different activities but seems it has been removed from the internet…that list showed a clear difference between charges for an aggregate search and a single item search (single item search when use the unique id as constraint or when using current page thing or when using get data from URL and set the type to a thing)