Can you share a link with more info? I vaguely remember something about a list of products made by indie makers. Is that it?

In that case my question is what the point of the list is. The revenue model should flow from there.

If the goal is to stimulate purchases for indie makers, then I'd focus on that first before worrying about the revenue model. If you can generate enough sales there will be plenty of options to monetize later on. However if you're just starting out with few sales I imagine it will be hard to get makers to implement an affiliate model (not worth the effort for just a few sales), nor are you able to charge a lot for advertisements (again, not worth the investment if there's only a few sales).

Charging early is generally good advice, but only works when you've established you can provide value worth paying for. For e.g. SaaS products this generally easier than the type of product you're looking to create.