m19 vs Perpetua: An Honest Comparison for Amazon Advertisers

Amazon advertising has never been moreexpensive — or more necessary. Average cost-per-click on Sponsored Products hit$1.12 in 2025, up roughly 15% year-over-year, and over 70% of active sellersnow run paid campaigns compared to 40% five years ago. More competition, higherCPCs, and thinner margins mean the average seller is now running an ACoS ofaround 30% — often without knowing whether that number is actually profitableonce organic sales are factored in.

Most sellers respond to this pressure one oftwo ways: they spend more, or they spend smarter. Spending smarter meanschoosing a platform that optimises for profitability — not just clicks — andthat treats paid and organic performance as a single system rather than twoseparate problems.

That's the real question behind the m19 vsPerpetua comparison. Both platforms automate Amazon PPC. But they makefundamentally different bets about what Amazon sellers actually need. Which oneis right depends on where you sell, how much you spend, and whether your teamhas the bandwidth to extract value from a more complex platform.

Feature Comparison

The tables below cover the threeareas where the platforms diverge most meaningfully in day-to-day use.

1. Bid Optimisation & Campaign Automation

 The core difference is not hourly versus daily — it's how decisions are made. That's how m19's model works: it forecasts conversion probability for every keyword-ASIN pair using 60 days of historical data and a 7-day competition signal, then sets bids accordingly. You set the objective. The algorithm decides the path.

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2. Reporting & Analytics

 The clearest reporting difference between the two platforms is AMC depth. m19 includes standard AMC attribution — sufficient for most sellers tracking cross-channel performance. Perpetua's AMC integration goes further: first-party audience building, customer lifetime value dashboards, and multi-touch attribution. For enterprise brands with significant purchase data and internal analytics teams, that depth is difficult to match. For Amazon-focused sellers who don't need custom audience segments, m19's unified SP + DSP dashboard covers the essentials without requiring SQL queries.

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3. Performance & Operation

 TACoS — total advertising cost of sale — measures ad spend as a percentage of total revenue, including organic sales. Unlike ACoS, which only tracks paid performance, TACoS captures the full picture: whether your advertising is actually growing the business or just moving spend around. m19 optimises for TACoS natively, meaning the algorithm factors organic rank into every bid decision. Perpetua optimises against ad-attributed revenue only.

Organic rank protection works on the same logic. When a product already holds the top organic position for a keyword, paying for the sponsored slot on the same keyword is often redundant. m19 automatically reduces bids in that scenario, with no cap on tracked keywords. Perpetua offers equivalent functionality as a paid add-on, limited to 25 keywords.

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4. User Experience and Accessibility

Autopilot by m19 is designed for sellers who want advertising running in the background with no daily involvement — setup takes around 10 minutes. m19 Professional plan is built for sellers and agencies who want more control: custom strategies, full ad format coverage, and deeper reporting. Neither plan requires you to write rules or manage keywords manually. The AI handles execution on both.

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Pricing

The most practical differencebetween the two platforms is pricing predictability. m19 publishes its pricingpublicly and operates on a cancel-anytime model. Perpetua does not list pricingon its website — figures below are sourced from third-party review platforms as ofmid-2025.

Perpetua contract note: Multiple verified reviews on Trustpilot and Capterrareference annual contracts with 90-day written cancellation noticerequirements. Verify contract terms before signing.

What Real Users Say

Ratings as of Q1 2025: m19 holds 4.8/5 on G2 and 4.5–4.7/5 on Trustpilot (51 reviews). Perpetua holdsapproximately 4.5/5 on G2; Trustpilot scores are more mixed, with apattern of billing and contract complaints alongside positive performancereviews.

m19

"8months in, our key lines have grown in velocity and ACoS consistently landsbelow target. The team actually told us we didn't need the more expensive plan.That kind of integrity is rare."  — Trustpilot — UK seller, 2024

"We have been using M19 for above 2 years now and are very satisfied. It is very intuitive and the datas + dashboards available on the platform allow us to better decision fast and track very througly our spending." — Trustpilot — UK seller, 2024

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Perpetua

"Asowner of a marketplaces agency, I've worked with different advertisingsolutions. Perpetua is still my favourite — the number of features is great andthey're constantly rolling out new ones." — Trustpilot — Agency owner, June 2024

"MyAmazon account was terminated. They still insisted on charging me under theannual contract — despite written confirmation from both Perpetua and Sellicsthat no further charges would follow."  — Trustpilot — Verified review, contract dispute, 2024

Amazon DSP: Programmatic at Scale

DSP is Amazon's programmatic advertising channel — display, video, and audience-based targeting beyond sponsored ads. It's increasingly important for full-funnel campaigns, and the two platforms treat it very differently.

For most Amazon-focused sellers, m19's integrated DSP keeps your programmatic and search campaigns in the same optimisation framework. Perpetua's DSP strength lies in its AMC-powered audience capabilities — most valuable for large brands with significant first-party data.

Which Platform Fits Your Situation

Neither tool is universallybetter. The decision comes down to where you sell, what you spend, and how muchinternal capacity you have to manage a complex platform.

Where to Start

If your business is Amazon-firstand you want to test before committing, m19's Autopilot plan has a 30-day free trial with nocredit card required — setup takes under an hour with no PPC expertise needed.For the Professional plan, you can start a free trial here, or request a demo if you're an agency or managing largerad spend.

If you need multi-marketplacecoordination, Prime Video ads, or enterprise-level AMC audience capabilities,Perpetua is worth evaluating — but request a clear breakdown of contract termsand total cost at your spend level before signing. See also: full-funnel advertising on Amazonand Amazon DSP explained fordeeper context on how these channels work together.

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Frequently Asked Questions

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Is m19 better than Perpetua for Amazon advertising?

For Amazon-only sellers focused on profitability and automation, m19 typically offers stronger predictive optimization at a lower price point with no annual contract. For multi-marketplace advertisers who need Amazon, Walmart, and Instacart in a single platform, Perpetua provides broader channel coverage that m19 does not offer.

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How much does m19 cost compared to Perpetua?

m19 Autopilot starts at $59 per month with a 30-day free trial. m19 Professional costs $479 per month plus 3% of ad spend. Perpetua starts at approximately $695 per month with no free trial and typically requires an annual contract. At $20K monthly ad spend, m19 Professional costs approximately $1,079 per month.

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Does m19 work on Walmart or Instacart?

No. m19 is an Amazon-only platform. It operates across all Amazon marketplaces globally but does not support other retail media networks. Perpetua supports Amazon, Walmart, Instacart, Target, and Google.

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What is TACoS and why does it matter for Amazon PPC?

TACoS (Total Advertising Cost of Sales) measures ad spend as a percentage of total revenue — including both paid and organic sales. Unlike ACoS, which only measures ad spend against ad-attributed revenue, TACoS shows whether advertising is contributing to overall business profitability. m19 is one of the few Amazon PPC platforms that offers TACoS as a direct optimization target.

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Which Amazon PPC tool is best for agencies?

m19 offers a dedicated agency tier with white-label capability, unlimited accounts, multi-customer dashboards, and predictable fixed-base pricing that agencies can build client billing around. Perpetua also serves agencies through enterprise custom plans, though pricing transparency is more limited.

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Does Perpetua offer a free trial?

No. Perpetua requires a demo with a sales representative before account activation. m19 offers a 30-day free trial on both Autopilot and Professional plans.

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How does m19's DSP compare to Perpetua's DSP?

m19 includes DSP in its Professional plan with no additional fee or minimum spend, using a simplified 4-step setup. Perpetua offers more advanced DSP capabilities including AMC audience building and Prime Video ads, primarily at enterprise tier. For standard display retargeting, m19 is simpler and more accessible. For AMC-powered audience strategies, Perpetua is more capable.

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Can m19 protect my organic ranking from PPC cannibalization?

Yes. m19 tracks organic rank and automatically reduces paid bids on keywords where the product already ranks organically, preventing paid ads from cannibalizing free traffic. This feature is included in all plans. Perpetua offers organic tracking as a $50/month add-on limited to 25 keywords.

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