A poster about "Transaction Costs in Indigenous Vegetable Marketing: Evidence from Rural and Peri-Urban Areas in Kenya" was presented on the second day of the Tropentag 2015 in Berlin. The person behind this valuable topic is from Leibniz Universität Hannover. He is Christopher Kiprono (27) and he is competing for this year's Value Chain poster. He is a MSc Horticulture major in Horticultural Economics under the supervision of his thesis Prof. Dr. Ulrike Grote. His study aimed to know and understand the types of transaction costs faced by farmers and their influence on farmers' selling behavior. The study's outcome would help provide insights on how participation to market can be enhanced. His findings revealed that savings and experience significantly influence selling decision and choice of market channel. Furthermore, education and information access were among the most important factors that influence selling behavior. Delivery agreements, specific buyer, and region influenced participation to formal and informal markets. His poster information is available online on Tropentag site. This is one of the 15 posters of Value Chain Session on September 17, 2015.