Allow users to opt into you injecting referral links. If they opt in, when they land anywhere, you rewrite amazon links to your referral code. Costs users $0, it's opt-in, and you make money.
Right now I'm dealing with a dude that requested his own brand be added. Which is totally cool. But looking at said brand. I am reeeaaallly struggling to tell if hes 3dprinting his stuff to sell, or if hes drop-shipping it and trying to get on the list.
You might even end up getting together a team of volunteers to look through them or it'll probably get overwhelming.
What determination did you use to make the original list?
I am sorta leaning towards just adding his brand. The list isn't append only, we can remove stuff if people feel the need.