Which is best for you?
If you don’t want to hire a developer or pay for a custom ecommerce setup, it is best to choose an online payment platform that has out-of-the-box tools with payment processing already integrated.
The most extensive one like this is Square, while SumUp includes easy payment tools intended for merchants using card readers too. Revolut offers simple payment links, but a developer is required in some cases for the online gateway.
If you’re just looking for an online store solution, it might be best to look for the website builder you want and see which payment systems work with that. For example, Shopify is popular with online retailers – it has its own payment system, but Amazon Pay and other payment methods are available too.
Many all-in-one ecommerce platforms can connect with several payment gateways including some of the above.