TY - JOUR AB - Purpose By studying the competition between a B2C platform and a third-party seller, the purpose of this paper is to analyze and compare their optimal decisions and profits between cases with and without sales effort of the platform or third-party seller.Design/methodology/approach This paper studies the competition between a B2C platform and a third-party seller. The platform sells a product directly, and allows the third-party seller to sell a competing product on the platform. Based on whether the platform or the third-party seller makes sales effort, there are four scenarios. The paper analyzes the optimal decisions and profits of platform and third-party seller under each scenario, respectively.Findings The transaction fee has a negative effect on third-party seller’s sales effort level. What is more, the platform can take a free riding from the third-party seller’s sales effort, but the platform’s sales effort has a negative effect on the profit of third-party seller.Practical implications These results provide managerial insights for the platform and the third-party seller to make decisions.Originality/value This paper is among the first papers to study the competition between B2C platform and third-party seller. VL - 45 IS - 7 SN - 0368-492X DO - 10.1108/K-01-2016-0009 UR - https://doi.org/10.1108/K-01-2016-0009 AU - Cao Kaiying AU - He Ping PY - 2016 Y1 - 2016/01/01 TI - The competition between B2C platform and third-party seller considering sales effort T2 - Kybernetes PB - Emerald Group Publishing Limited SP - 1084 EP - 1108 Y2 - 2024/04/23 ER -