Grasp the subject, the words will follow.
Cato the Elder

Zen-cart Online store examples

For online stores (shopping carts) the preferred web application is Zen Cart. This is based on the old standard OSCommerce but with significantly improved programming, particularly in the use of file overrides to permit upgrades without breaking customised templates and modules. An active team at zencart.com supports and continues to develop this application.

MPI Ultrasonics bookstore
MPI Ultrasonics Bookstore In this small store for high-value virtual products (specialist e-books for download), the web application automates the purchase and delivery process completely. Immediately after payment is received at PayPal, download links are made available to the client.
IMS online store
IMS Magnet store This is the online branch of a bricks-and-mortar magnetic products business. Delivery costs are calculated automatically using the Australia Post API and credit card payments are taken online using the SecurePay eSec payment gateway.
Ultrasonics World
Ultrasonics World online store for power ultrasonics and sonochemistry equipment Ultrasonics World offers low-cost, high-power ultrasonic products as replacement parts which are fully compatible with the standard components from major manufacturers.