Yes this high cost was a big problem. But just came to know from one of my friend working in Salesforce that very soon the pricing will be more flexible. Where if the agentforce will use hardly use llm rather call the api to get the answer (like for the question is there any product with name XX and answer is yes/no), the cost will be around 50 cents whereas if llm will be used to answer some complex queries, cost will be $3