linkr charges a monthly platform usage fee. Subject to your chosen plan, you can work with a set number of influencers through the platform. You can up- or downgrade your plan at any point in time.
How you would like to compensate influencers for their work is separate to that. The linkr platform allows you to setup and execute any type of influencer compensation (free samples, performance based or fixed fees, sales commission, lottery, etc.). While the decision is up to you in the end, the platform provides guidance to help you to pick the right compensation method & height for a given campaign type, size, etc.