Amazon Keyword Research: How to Check Keyword Difficulty and Search Demand

Amazon keyword research usually starts with two numbers — search volume and keyword difficulty — and treating them as one question is the most common mistake in reading demand data. Volume tells you how many people are searching for something. Difficulty tells you how hard it would be to get in front of them once they do. A product idea needs a reasonable answer to both, not just the first one — a term nobody searches for is a dead end no matter how easy it would be to rank for, and a term with huge volume but a market fully occupied by established listings can be just as much of a dead end in practice.

Volume on its own is also incomplete without direction. A search term holding steady at a healthy level is a safer bet than one that spiked recently and may already be cooling by the time a new listing goes live — inventory takes time to arrive, and a trend that peaked while you were sourcing stock is a trend you missed. Reading the trend line, not just the current number, is what separates a durable opportunity from a moment that already passed.

Keyword difficulty measures something narrower than it sounds: specifically, how hard it is to rank organically for a term, which is a different question from how contested the paid advertising for that same term is. A keyword can be cheap and uncontested in ads while still being extremely hard to rank for organically, because organic difficulty is driven by how established the existing listings are — their review counts, their age, their accumulated authority — not by how much anyone is willing to bid per click. Conflating the two leads to picking a product that looks winnable in one lens and is actually locked up in the other.

So what is a good keyword difficulty score to look for? Under 30 is genuinely favourable ground for a seller with no existing track record. 30 to 40 is borderline — winnable, but it will take a solid listing and probably some patience. Above 40, the difficulty climbs quickly, because the score is measuring distance from listings that already have what a brand-new store doesn't have yet: history. These bands are set deliberately lower than a general-purpose SEO tool would use, because a site with years of authority behind it can absorb a difficulty score that would sink a store that opened last month.

The two numbers together tell a story neither tells alone. High volume with low difficulty is the easiest kind of opportunity to find and the fastest to get taken — if it's real and durable, it usually doesn't stay uncontested for long. Moderate volume with low difficulty is where a lot of realistic wins actually live: enough people looking, and a genuinely reachable path to being found among them. High volume with high difficulty is usually a signal to niche down rather than compete head-on — a narrower, more specific version of the same product idea can inherit some of the demand while dodging most of the difficulty.

One more thing worth checking before trusting either number: whether it actually came back at all. A search volume checker that failed to return data is not the same as one that returned a low number, and a tool that can't tell the two apart will happily average a missing value into zero and call it evidence. Look for a report that visibly distinguishes 'this scored low' from 'this didn't return anything' — the second case should stay unscored, not get quietly folded into the result as if it were the first.