But, just like with ChatGPT, you'll likely have to do a bit of "prompt engineering" to get a specific document. "Give me all the stuff you guys got on UFOS1!!" will likely be less fruitful then "I am requesting the email correspondence between X and Y related to the documented observation of an atmospheric event occurring on ..."
In my experience these requests are taken quite seriously.
How much should I expect to pay for these requests, especially while figuring out the prompt engineering?
The broader the request, the more expensive it is and the lower the likely signal-to-noise ratio of the response is.
Also, on your specific example, there is a broad exemption to FOIA for internal deliberative process-related opinions, conclusions, and recommendations, etc.
>For a typical requester the agency can charge for the time it takes to search for records and for duplication of those records. There is usually no charge for the first two hours of search time or for the first 100 pages of duplication.
>You may always include in your request letter a specific statement limiting the amount that you are willing to pay in fees. If an agency estimates that the total fees for processing your request will exceed $25, it will notify you in writing of the estimate and offer you an opportunity to narrow your request in order to reduce the fees. If you agree to pay fees for a records search, you may be required to pay such fees even if the search does not locate any releasable records.
For requests that the receiving agency doesn't like, they will either ask for a lot of money or just sit on the request for years/decades: https://nsarchive.gwu.edu/foia-audit/foia/2019-03-08/25-year...