10% of your tour cost is a good amount. Our guides are an essential part of the adventure team here at OX. They really put a lot of effort into the preparation and post trip clean-up for your tour. Not to mention execution of an amazing adventure keeping you safe and secure in the mountains. They make it look easy, but believe us, the training and preparation takes years to master. Thank them for their efforts with a small token of your appreciation. 🙂