This paper analyzes the demand and cost structure of the French market of academic journals. After merging several databases, we estimate an aggregated nested logit demand system combined simultaneously with a pricing equation, taking into account the evolution of impact factors of journals. We identify the structural parameters of this market and find that price elasticities of demand are relatively high, indicating that this industry experiences competitive constraints. We conjecture that the two-sidedness feature of academic journals could be a rationale for our results.