Amazon PPC glossary
Wasted spend
Wasted spend is money paid for clicks that did not lead to a sale. Some of it is normal while you gather data. It becomes a problem when the same search terms keep costing you clicks with no orders.
Example
A search term gets 25 clicks at $0.60 each and no orders. You paid $15.00 for it and earned nothing. That $15.00 is wasted spend, and a good candidate to block with a negative keyword.
Where it matters most: Book 1, The Amazon PPC Clarity Guide, in the chapter “Reading Search Term Reports.”
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Go deeper
The glossary gives you the one-line answer. The Amazon PPC Clarity Guide explains why it matters and what to do about it.