Would think they would be worth the top at sale, if they are the same quality cattle and treatments, less three 3-5% shrink. The sale barn commission really don't play into for me because the buyer at sale barn pays whatever the bid is. Always aggravated me when I sold feeder pigs off the farm and the buyer would throw that out there.  Figure out what YOU think they're worth by the head and price them that way, anything else gets complicated IMO.