Aquasar Cafe
Gatsby + Shopify
Using Gatsby and Shopify for more flexibility in payment process options
As of this writing, Contentful + Snipcart combination is okay for some use cases. One use case could be adding in easily Checkout ability for credit cards only for certain regions on existing site that has Contentful already implimented or where Content rather than ecommerce is a primary focus. ie. blogging or information site.