I use Shopify, a comprehensive ecommerce platform that provides personalized templating and landing page solutions for both small and large businesses. It is easy to use, and I appreciate its broad range of features and flexibility.
Shopify allows for the creation of highly customized landing pages, offering several custom templates and themes to choose from and complete custom coding support. It also provides a direct connection to payment processing, analytics and marketing tools.
If you're looking for an ecommerce templating and landing page solution, I highly recommend taking Shopify for a test drive. You can find tutorials, guides, and lots of info about Shopify and its features at the official Shopify website, https://www.shopify.com.