It does not matter that they don’t charge, because you don’t have to sell something for it to be a product. You only have to offer it to a market. You can sell spranglers, and provide sprangler dinchels for free, and sprangler dinchels are still considered your products.
Since you won’t believe me, here’s the dictionary definition of the word product. I’ve emphasized the important part.
2 a (1) : something produced
especially : COMMODITY sense 1
(2) : something (such as a service) that is marketed or sold as a commodity
- https://www.merriam-webster.com/dictionary/product
And if you don’t trust that dictionary, here’s another:
1 [[countable, uncountable] a thing that is grown, produced or created, usually for sale
- https://www.oxfordlearnersdictionaries.com/definition/english/product
Or if you’d rather trust an encyclopedia, here’s Wikipedia’s entry (emphasis not mine):
In marketing and economics, a product is any object, service, or system offered to a market to satisfy a customer’s need or want. Products may be tangible, such as physical goods that can be touched and owned, or intangible, such as services, digital offerings, or rights that provide value without physical form. Products are created through processes of design, production, and distribution, and they play a central role in commercial exchange, consumer behavior, and organizational strategy.