Why Most Amazon Sellers Overspend on Advertising — And How to Fix It

The Hidden Cost of Advertising Waste

Here is a statistic that should concern every Amazon seller in India: in our experience auditing advertising accounts, we consistently find that 25 to 40 percent of ad spend is wasted. Not underperforming — genuinely wasted on clicks that had no realistic chance of converting.

For a seller spending ₹2,00,000 per month on Amazon advertising, that means ₹50,000 to ₹80,000 going to irrelevant clicks, poorly structured campaigns, and unmonitored spend. Over a year, that is ₹6,00,000 to ₹9,60,000 in pure waste.

The frustrating part is that most of this waste comes from six fixable problems. Let us walk through each one.

Problem 1: Not Using Negative Keywords (or Using Too Few)

Why It Happens

Negative keywords are the most powerful tool in Amazon PPC, and the most neglected. Most sellers set up campaigns, add target keywords, and never look at what search terms actually trigger their ads.

The result: your ads show for searches like "free [product]", "[product] repair", "[competitor brand] [product]", and dozens of other terms where the shopper has zero intent to buy your product.

How Much It Costs

A typical campaign without negative keywords wastes 15 to 25 percent of its budget on irrelevant clicks. We have seen accounts where a single auto campaign was spending ₹500 per day on search terms that had never generated a single sale in six months of data.

How to Fix It

• Download your search term report weekly
• Identify terms with more than 20 clicks and zero orders — add them as exact-match negatives
• Look for thematic patterns — if "second hand" or "used" terms keep appearing, add broad-match negatives for those themes
• Review category-level negatives — terms from completely unrelated categories should be blocked immediately

ScaleSkus approach: Our AI-powered search term classification automatically processes every search term in your account. The system flags irrelevant terms for negative keyword addition, using a three-step pipeline (SQL rules, historical cache, and Gemini AI) that handles over 280,000 data rows per account. Terms are classified within hours, not weeks.

Problem 2: Wrong Match Types Burning Budget

Why It Happens

Amazon offers broad, phrase, and exact match types, plus automatic targeting. Many sellers either run everything on broad match (too wide) or dump all keywords into automatic campaigns (no control).

Broad match for a keyword like "water bottle" will trigger your ad for "water bottle cap replacement," "water bottle for hamster," and "water bottle manufacturing machine." You pay for every click.

How to Fix It

• Use automatic campaigns only for keyword discovery — set low bids and small daily budgets
• Graduate proven keywords to manual campaigns with appropriate match types
• Exact match for your top 20 to 30 converting keywords — these get the highest bids and biggest budgets
• Broad match for exploration — but always pair with aggressive negative keyword management

ScaleSkus approach: Our platform tracks keyword performance across match types and automatically recommends graduations. When a broad-match keyword proves itself with consistent conversions, the system flags it for exact-match promotion. Conversely, when an exact-match keyword stops performing, the system recommends bid reduction or pausing.

Problem 3: Ignoring Search Term Reports

Why It Happens

Search term reports are where the real intelligence lives, but they are overwhelming. A medium-sized account generates thousands of unique search terms per month. Most sellers glance at the top few and ignore the rest.

This is where the biggest opportunities hide — and the biggest waste. Long-tail search terms with 5 to 10 clicks each might seem insignificant individually, but collectively they can represent 40 to 60 percent of your total ad spend.

How to Fix It

• Analyse every search term with spend above ₹100 per month
• Segment terms into categories: high-converting (scale), moderate (optimise), non-converting (negate), irrelevant (negate immediately)
• Look for patterns: branded terms, competitor terms, generic terms, long-tail terms — each requires a different strategy
• Set a weekly cadence — search term analysis should happen every week, not monthly or quarterly

ScaleSkus approach: This is where our AI classification engine delivers the most value. Manually reviewing 5,000+ search terms per month is impractical for any human team. Our system processes every single term, classifying them with over 90 percent accuracy. The result: no term goes unreviewed, no waste goes undetected.

Problem 4: No Budget Caps or Dayparting

Why It Happens

Amazon sets daily campaign budgets, but many sellers set them too high ("just in case") or do not monitor intraday spend patterns. The result: campaigns exhaust their budget by noon, missing the evening conversion peak. Or worse, a sudden spike in irrelevant traffic drains the entire daily budget on worthless clicks.

How to Fix It

• Set realistic daily budgets based on your target monthly spend divided by 30
• Monitor intraday spend patterns — if your budget is gone by 2 PM, either increase it or reduce bids to spread spend across the full day
• Consider dayparting — if you know your product converts best in the evening (common for consumer products on Amazon India), reduce bids during low-conversion hours
• Set base budgets with maximum caps — never let a campaign spend more than X percent above its base in a single day

ScaleSkus approach: Our platform includes automated budget management with configurable base budgets and maximum caps for every campaign. The system also provides daypart-aware bid adjustments using hourly data from Amazon Marketing Stream. If a campaign starts spending too fast, the system automatically moderates bids. If a campaign is underspending during peak hours, bids are increased to capture available traffic.

Problem 5: Poor Campaign Structure

Why It Happens

Many sellers start with one or two campaigns and gradually add keywords to them over time. A year later, a single campaign contains 200 keywords, three match types, and multiple product targets — all sharing one daily budget and one set of bidding rules.

This is the structural equivalent of putting your entire product catalogue into a single shipping box. You lose all ability to control where money goes and what performs.

How to Fix It

• One campaign per objective: separate auto-discovery, broad-expansion, exact-scaling, and product-targeting campaigns
• Group keywords by theme and intent — do not mix branded and non-branded keywords in the same campaign
• Separate high-performing keywords into their own campaigns with dedicated budgets
• Use portfolio budgets to cap total spend across related campaigns

ScaleSkus approach: Campaign restructuring is one of the first things we do when onboarding a new client. Our team analyses the existing structure, identifies consolidation and separation opportunities, and rebuilds campaigns with a clean architecture that enables precise optimisation. The platform then maintains this structure through automated monitoring.

Problem 6: Set-and-Forget Campaign Management

Why It Happens

After the initial setup excitement fades, many sellers stop actively managing their campaigns. Bids remain unchanged for months. New keywords are never added. Negative keywords never accumulate. The market shifts, competition changes, CPCs fluctuate — but the campaigns stay frozen in time.

Amazon advertising is not a "set it and forget it" channel. It requires continuous optimisation because the competitive landscape changes daily.

How to Fix It

• Weekly tasks: review search term reports, add negative keywords, adjust bids on top spenders
• Bi-weekly tasks: evaluate campaign structure, promote or demote keywords between match types, review budget allocation
• Monthly tasks: analyse overall ROAS trends, review TACoS trajectory, assess competitive position, plan for upcoming seasonal events

ScaleSkus approach: This is the core reason our hybrid model exists. Our AI-powered platform handles the daily and weekly optimisation tasks automatically — bid adjustments, search term classification, budget monitoring, anomaly detection. Our human team handles the strategic tasks — campaign restructuring, competitive analysis, growth planning, and responding to market changes. The combination means campaigns are never neglected, even during weekends, holidays, and off-hours.

Calculating Your Actual Waste

Here is a simple exercise to estimate how much your account is wasting:

1. Download your search term report for the last 90 days
2. Filter for terms with zero orders
3. Sum the total spend on those zero-order terms
4. That number is your minimum waste — the real number is higher because it does not include terms with very poor conversion rates

Most sellers who do this exercise are shocked. We have seen accounts where 35 percent of total ad spend went to search terms that never produced a single order.

Take Action Today

Every day of unchecked waste is money that could be driving profitable sales. Whether you fix these issues yourself, hire a freelancer, use software, or work with a partner like ScaleSkus — the important thing is to stop ignoring the problem.

ScaleSkus offers a free advertising audit for Amazon India sellers. We will review your campaigns, quantify the waste, and provide an actionable plan to fix it. No commitment required. Request your free audit here.