PPC (Pay-per-Click)

Amazon & D2C glossary · Harpy Media

PPC (Pay-Per-Click) is the advertising model where you pay for each click rather than for impressions or sales: the pricing spine of Amazon’s sponsored advertising, across Sponsored Products, Brands, and Display.

What is PPC?

PPC (Pay-Per-Click) is the advertising model where you pay for each click rather than for impressions or sales: the pricing spine of Amazon’s sponsored advertising, across Sponsored Products, Brands, and Display.

It is simple to buy and difficult to master. The auction combines bid, relevance, and expected conversion, so what you pay per click and what that click is worth are both consequences of things you control only partly — which is why advertising discipline, rather than budget size, separates profitable accounts from busy ones.

What actually determines performance

Three variables. Bid: what you are willing to pay for a click. Relevance: how well the listing matches what the shopper searched for, which the platform rewards with cheaper, better placements. And conversion: whether the click turns into an order — because the platforms optimise toward traffic that converts, a listing that closes well earns cheaper clicks than one that does not.

That structure has a practical consequence. The fastest way to improve advertising efficiency is often to improve the product page rather than the campaign, because better conversion lowers the effective cost of every click you buy. Sellers who treat advertising as a lever on the page miss the multiplier that works in the other direction.

Reading the numbers that matter

Cost per click tells you what a visit costs. Advertising cost of sales — spend divided by the revenue it generated, as a percentage — tells you whether those visits pay for themselves against your margin structure. The second is the number that decides scaling: a campaign can look expensive per click and still be highly profitable, or cheap per click and loss-making.

Then structure follows intent. Exact-match bidding on high-intent terms and defensible positions is where the returns concentrate; broad and automatic targeting have their place for discovery, but they must be reviewed and pruned with negatives, or the budget drifts toward searches that were never going to convert. Discipline, in other words, is mostly what you exclude.

In practice

A seller launches a targeted campaign on exact-match, high-intent terms, using conversion data to decide which keywords deserve bids. The advertising cost of sales stays lean, top-of-page visibility is maintained during the periods that matter, and margins stay healthy enough to keep funding inventory — a precise campaign outperforming a bigger one.

How Harpy Media helps

Advertising management is a core part of our growth work: campaign structures built around proven intent, search terms pruned continuously, and effectiveness read against margin rather than spend.

PPC FAQ

What is PPC advertising on Amazon?

Pay-per-click advertising — you are charged when a shopper clicks your ad, across Sponsored Products, Brands, and Display. Placement depends on bid, relevance, and expected conversion performance.

What is a good ACOS?

It depends on your margin structure and objective. Advertising cost of sales should be judged against the profit available on the sale; profitable scaling can tolerate a higher ACOS on growth terms than on defensive ones.

How do I lower my cost per click?

Improve relevance and conversion: tighter keyword targeting, a better-converting detail page, and stronger engagement signals. More relevant, better-converting listings earn cheaper placements than higher bids alone can buy.