input: [Service] Payment processing fees [What We Offer] SEO-Cart works with a wide range of payment processing gateways, letting you choose which is best for you. Some gateways have no monthly fees and only charge you by the transaction. Some give you a credit card swiper that plugs in to your computer or phone. Talk to us about it. We do not charge you any transaction fees for orders from your customers. [Common Practice] 
output: Some carts have your store's checkout process on another website. This looks highly unprofessional to your customers and they may wonder if they are being scammed, leading to potential cart abandonment. Some carts make you use their internal payment processing system. You are locked into whatever rates they offer, and they get a percentage of every order placed on your website.