Why ACoS Isn’t Everything: The True North of Amazon PPC Profitability

If you run Amazon pay-per-click (PPC) ads, you’ve probably been told to keep your ACoS (Advertising Cost of Sale) as low as possible. ACoS is undeniably important, but it is only one piece of the profitability puzzle — and it should not be your sole focus when optimising your Amazon PPC campaigns.

Understanding ACoS

ACoS represents the ratio of ad spend to attributed sales, expressed as a percentage. For example, if you spend $100 on ads and generate $1000 in sales, your ACoS would be 10%. Generally, a lower ACoS is seen as better because it means you’re spending less to generate each sale.

Why ACoS Matters

1. Efficiency Indicator: ACoS helps you gauge how efficiently your ad spend is converting into sales.
2. Benchmark Tool: It allows you to compare performance across different products, campaigns, or time periods.
3. Budget Management: ACoS can guide decisions on where to allocate your advertising budget.

The Limitations of ACoS

While ACoS is valuable, it falls short as an overall objective for several reasons:

1. Ignores Profit Margins: A low ACoS doesn’t necessarily mean high profitability if your product has slim margins.
2. Overlooks Long-Term Value: ACoS doesn’t account for customer lifetime value or brand building benefits.
3. Disregards Scale: Focusing solely on ACoS might lead you to miss opportunities for growth through increased ad spend.
4. ACoS is a metric, not an objective: as long as an ad is profitable, it’s adding to your bottom line. Stopping it might reduce your overall ACoS, but you’d be cutting profitable sales to do it.

The True North: Profitability

Ultimately, your goal as an Amazon seller is to maximise profits, not just to achieve the lowest possible ACoS. Here’s why profitability should be your guiding star:

1. Holistic View: Profitability considers all costs, including product costs, fees, and overhead – not just ad spend.
2. Growth-Oriented: A profitability focus allows for strategic decisions that may temporarily increase ACoS but lead to long-term gains.
3. Business Sustainability: Prioritising profits ensures the long-term viability of your Amazon business.

How to Focus on Profitability

1. Calculate Your Break-Even ACoS: Understand the point at which your ad spend equals your profit margin.
2. Consider Total Attributed Sales: Look beyond immediate ad-attributed sales to account for future organic sales using Total Advertising Cost of Sale (TACoS)
3. Analyse Profit per Order: This metric combines ACoS with your profit margins for a more complete picture.
4. Test and Learn: Be willing to increase ad spend and ACoS if it leads to higher overall profits.

A slightly higher ACoS that generates significantly more sales and profit is preferable to a low ACoS that limits your growth.

Scaling Up: Why Maximum Ad Spend on Profitable Ads is Key

When you’ve cracked the code and found ads that consistently turn a profit, it might seem counter-intuitive to keep increasing your ad spend. Yet spending more on ads you know are profitable is often the best use of your budget. Here’s why you should consider maxing out your budget on profitable ads:

1. Compound Growth : Every profitable ad not only generates immediate sales but also contributes to your organic ranking. Higher rankings lead to more organic sales, creating a virtuous cycle of growth.
2. Market Share Expansion : By increasing your ad presence, you’re effectively claiming more digital shelf space. This can help you capture a larger share of your market, potentially at the expense of competitors.
3. Economies of Scale : As your sales volume increases, you may be able to negotiate better rates with suppliers or unlock bulk shipping discounts, further improving your margins.
4. Data Accumulation : More ad spend means more data. This wealth of information can help you refine your targeting, improve your product listings, and make better inventory decisions.
5. Brand Recognition : Increased visibility through ads can boost brand recognition, potentially leading to higher conversion rates on both paid and organic listings.
6. Opportunity Cost : Every day you’re not maximising your profitable ad spend is a missed opportunity for growth and increased market share.
7. Buffer Against Competition : In competitive markets, maximising your presence can create a barrier to entry for new competitors and make it harder for existing ones to gain ground.
8. Increased Opportunities for Exploration : Increasing the profit your ads generate frees up money to experiment and find more profitable search terms. You can re-invest your profits into new automatic targeting campaigns, or manual campaigns using broad match in order to discover new areas of opportunity.

This strategy needs careful monitoring and adjustment. As you increase spend, keep an eye on:

• Diminishing returns: At some point, you may hit a ceiling where additional spend doesn’t yield proportional results.
• Changes in profitability: Ensure that scaling doesn’t erode your profit margins due to factors like increased competition or market saturation.
• Cash flow: Make sure your business can support the increased ad spend without creating liquidity issues.

Remember, the goal is controlled, profitable growth. By pushing your ad spend to the limit on campaigns that consistently generate profit, you’re not just selling more – you’re investing in the long-term success and dominance of your Amazon business.