I’ve got it working now using the links for the products seperately/combined/in the cart individually/combined in the cart - where i just redirect the user to the URLs.
What i’m needing now, is a way to redirect from the shopify site after payment has been made and back to our internal react app, but i dont see that option in the dashboard unless i get the plus subscription - is that correct?
For your Storefront API access token, the cleanest way to get that is through the Headless channel. Install it from the App Store, click Create storefront, and it generates your public and private access tokens right there. This works on all plans, no Plus required.
For the cart side of things, since what you are building is headless the Storefront API Cart is the recommended approach. You manage the cart state in your React app and then use the checkoutUrl field returned on the Cart object to redirect users to the checkout when they’re ready to pay. The full guide on managing carts is here.
For the post-purchase redirect question, here’s a breakdown of all the customization options available for the thank-you and order status pages depending on your plan: Thank you & order status customization options.