One of the largest e-commerce platform available, Shopify is a seller’s dream. Log all of your sales and transactions, whether online or in shop, in one place and keep on top of your inventory. There are plenty of options for tracking and improving sales. Shopify transactions are free, while external payment gateways require a fee of between 0.5 and 2% depending on which subscription you sign up for, and there is also a monthly fee. As you are guaranteed traffic, Shopify is well worth the investment.