Adjust bids by placement is another bidding option offered by Amazon, which replaced Amazon Bid+. The ability to adjust bids by placement gives Amazon advertisers the power to influence where their ads are displayed.  The maximum adjustment for a “Top of Search” placement (which is associated with the highest click-through rates) is 900% (or 10 times the default bid). The maximum adjustment allowed for other placements is 100% (or twice the default bid).  You can use placement-based adjustments in combination with other dynamic bidding strategies to exert considerable influence over where your ads appear and how much you are paying for them.