How it works
First off, this blog article (click here) can give you all the information available around Amazon's Placement reports.
Be sure to understand how high your bids can end up, especially paired with up & down dynamic bidding, to avoid running into unexpected high costs.
Analyzing Performance for different Placements
Generally it is difficult to give any general advice, as the ad's placement may influence comsumer behaviour very differently for different types of products.
You should therefore use Sellics' Placements feature to analyze whether a specific placement (ie. top of search or product pages) works better for some products (campaigns):
Implement Learnings from Data
For instance, if your Conversion Rate is significantly higher for top of search ads than it is for rest of search / product pages for a certain campaign, you may want to make use of placement bid adjustments for the top of search ads.
To determnine by how much, calculate a new target CPC and thus bid accoring to the placement's conversion rate, as detailed in the mentioned blog.
Automation Rules work well with dynamic Placement Bidding
Although Sellics is not aware of how many times a bid was de- or increased in realtime through live placement bid changes, it will still make sense for the rules to, for example, decrease the base bid if the ACOS remains too high.