The website lists products, some are available for sale in the website while other's don't.
So far, I've seen 2 approaches on how to list the products:
Having one single product listing page, each product links to its detail page. For products sold online, have "Buy Now" button. For products not sold online, have descriptive text about how to purchase.
Having 2 product listing pages. One acts like a catalog (all products, no eCommerce). The other one only lists products sold online and has all eCommerce features.
This approach can result in product repetition. The same product can be listed in the catalog AND the eCommerce list.
What are the usability benefits / drawbacks of each option?