What are the min benefits of using FRAAG on my web site ? I have a whole library of documents which I want my web users to query. Could FRAAG be a solution ? Does FRAAG need me to pay for a ChatGPT or Claude subscription ? Does FRAAG payment depends on the number of users and the number of interactions/questions ? How long does it take to implement FRAAG on my WordPress web site ? My web site and content database is complex. Do you propose specific online RAG projects ?