I did some analysis[1] on this for 2 merchants we send traffic to, admittedly it's not in exactly the same space the buying trends would probably be similar. The merchant with a longer history of data has 59% in the first 24 hours meaning you would be missing out on 41% of sales.

This is a trend I have noticed with affiliate programs, the closer a company comes to market saturation in a space the worse the terms get. It makes sense has had the blog post not provided links there is a good chance people will head over to amazon anyway.

[1]https://www.affclicks.com/blog/commission-percentage-and-coo...