This site is on its third iteration/platform, currently hosted on Shopify. Shopify offers reliability, customization, and full integration with many small business SaaS products. The site includes a subscription service, integration with Mailchimp, Google Analytics, and more.
We originally built this e-commerce site utilizing LemonStand for host and custom fully-responsive Bootstrap-based theme. We migrated all the products from Squarespace Commerce and provided new functionality (wholesale page and ordering.)