I hope wix awesome team could integrate the shopify buy button SDK ( https://shopify.github.io/js-buy-sdk/ ) with wix code, it’s a great tool for selling online and a great buying experience for our customer
Youtube - https://www.youtube.com/watch?v=U_W6bcTCgq4
Sample - https://blog.codepen.io/2016/11/10/shopifys-buybutton-js-codepen-embeds/
Is there a reason why you want to use Shopify instead of Paypal? I think they both are possible by making all code inside a html component and then altering the parameters inside that html component using wix code.
I want to put my products into Shopify and design my store in Wix, I love the Wix design and I love the Shopify handle my product so it’s really a amazing thing if this two integrate.