Asking Questions and Uploading Tutorials are all FREE! on the platform.There are no fees for posting questions students need assistance with. However, Selling tutorials are 18% or 40% less. For example, If a tutorial is purchased by the student who asked the question, tutor's earn less 18%. If the tutorials get repurchased, tutor's earn less 40%. Detailed and highly rated tutorials can be sold dozens or even hundreds of times.