Typically, the cost of using a payment gateway is a combination of fees, including a setup fee, a transaction fee, and a monthly fee. Payment gateway fees range between $10-25 per month plus $0.05-$0.10 per transaction, depending on the payment gateway provider. Popular payment gateway providers are Authorize.net and NMI. In addition, a daily batch fee of $0.05-0.10 is charged for aggregating all transactions from the past 24 hours into a single “batch” and sending them to the processing networks.