053-1 Wyo. Code R. § 1-8
(a) The Department will notify the requester of the estimated fees for making the public record available for inspection or for providing copies to the requester. If the estimated fees exceed thirty dollars ($30.00), the Department will provide written notice and will not act further in responding to the request until the requester notifies the Department, in writing, to proceed with making the records available.
(b) A retainer shall be required in advance of processing a record request whereby, in the estimation of the Department, the total cost of processing the record request will exceed thirty dollars ($30.00). The Department shall determine the estimated cost of processing the record request and require the requesting person or entity submit that amount as a retainer. After the request has been processed, if the actual cost of processing the request was greater than the amount received as a retainer, the Department shall contact the requester and require they submit the difference before releasing the information. If the actual cost of processing the request was less than the amount received as the retainer, the Department shall refund the difference. No copies of records shall be released without the receipt of payment in full.
053-1 Wyo. Code R. § 1-8