Great article, My only, I guess feedback, is that it's not really clear about the price. Would the 21.92 be the API pricing I guess? Cost $5.39 (real billed)

Great article, My only, I guess feedback, is that it's not really clear about the price. Would the 21.92 be the API pricing I guess? Cost $5.39 (real billed) ~$21.92 (estimate, list pricing)