How much does Newsela cost?

Excuse me, could you please elaborate on the pricing structure of Newsela? I'm curious to know how much it would cost to utilize their services, specifically in terms of any subscription fees, pay-per-use charges, or any other potential costs that I should be aware of. Additionally, is there a pricing plan that's tailored to fit the needs of different users, such as educators, students, or organizations? Thank you in advance for your clarification.