ExchangeWP is an all-in-one WordPress website toolkit for e-commerce. With a selection of addons, the cheapest package for one website and unlimited products and transactions will cost you around €50 a year. This price allows for payments via PayPal or Stripe, gives you the MailChimp addon for free and supplies customer support. You can also add product videos, set up custom urls for tracking purposes and create free offers. And that’s just for starters!