Bidding · ACoS · auction math
Covers bidding, auction mechanics and the arithmetic of ACoS — the numbers side of Amazon PPC. Part of the AIAdKing editorial team at VPDM Inc.
Every Amazon bidding question — "should I raise this bid?", "why is my CPC so high?", "what should I bid on this keyword...
Sometimes the goal isn't a better ACoS — it's a smaller bill. Cash gets tight, margins compress, a business decision cap...
ACoS and ROAS measure exactly the same thing — advertising efficiency — as mathematical mirror images: ACoS is spend div...
Lowering ACoS is easy — pause everything and it hits zero. Lowering ACoS while keeping the sales is the actual job, and...
A high ACoS has exactly two possible parents: you are paying too much for clicks, or the clicks you buy aren't convertin...