To date, we’ve charged for Google Site Search based on both the number of submitted search queries and the number of pages indexed. Our new pricing is based only on queries. It is much simpler and scales to accommodate the size of your organization.
A bonus -- as part of this change, we’ve doubled the allocation for On-Demand pages indexed per search engine.
For more details, please check our post on the Google Enterprise Blog.
Posted by: Hui Xu, Staff Software Engineer