41 CFR § 301-74.4
What should cost comparisons include?
June 9, 2020
Cost comparisons should include, but not be limited to, a determination of adequacy of lodging rooms at the established per diem rates, overall convenience of the conference location, fees, availability of meeting space, equipment, and supplies, and commuting or travel distance of attendees. (See Appendix E to Chapter 301, Guidance for Conference Planning.)