Tip according to the service given by the guide and not whether an animal was harvested or not. Don't blame the guide either if the outfitter is a thief and has a crap unit or hunting area. 15% of the price of the hunt is about right in most cases plus I usually buy them dinner when we get back in town. Also plan on tipping the cook and the amount is up to your discretion but without him feeding you good food your hunt is doomed. Taxidermy fees and excess baggage will definitely bite you ...Plan on 100-150 bucks for 3-4 boxes of elk meat that's what United usually nails me with. Bring a good guncase and a duffle bag and everything else put into carryon and you will minimize the excess baggage fee. Meat processing fees vary from place to place but expect at least 150-200 as an average to process a bull not including dry ice and carboard boxes. Hotel costs are another factor before and after the hunt especially if you leave early as are airport meals. Hope that helps...