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E-Commerce Marketing Manager · $120-180K/mo total ad spend

Your Agency Set Up One PMax Campaign for 1,200 Products. Your VP Wants Proof of Incrementality. You Just Got Back From Maternity Leave.

You inherited this Google Ads account. The agency charges $6K/mo and set up one PMax campaign for 1,200 products across 10+ categories. You asked for category-specific campaigns and they said 'PMax handles segmentation automatically.' You don't have enough Google Ads knowledge to know if they're right or lying. Your VP is threatening to hire a new agency OR bring it in-house with you managing it. And you need to prove whether these ads are driving incremental revenue or just capturing demand you'd get organically. No pressure.

Industry benchmarks

The numbers in your market

0 per major category

PMax campaigns per category (best practice)

Not 1 campaign for 1,200 products across 10+ categories

0% of spend

Agency management fee (%)

$6K/mo on $80K spend = 7.5% (normal range, but results matter)

0%

Incrementality lift (well-managed Google Ads)

Compared to organic-only baseline in geo tests

0x

Blended ROAS target ($18M DTC brand)

Depends on margin structure and brand awareness

The problem

Sound familiar?

One PMax campaign for 1,200 products across 10+ categories

Your agency set up a single PMax campaign for your entire catalog. 1,200 SKUs, 10+ product categories, one campaign. You asked about category-specific segmentation and they said 'PMax handles it automatically.' You suspect this is lazy, but you don't have enough Google Ads expertise to prove it.

You can't prove Google Ads drives incremental revenue

Your VP wants to know: are Google Ads actually driving new customers, or just capturing people who would have bought anyway through organic or direct? You need an incrementality test but don't know how to design one — and your agency deflects every time you ask.

The agency vs in-house decision is on your shoulders

Your VP wants a recommendation: keep the $6K/mo agency, hire a new one, or bring Google Ads management in-house. Each option has risks. You need the technical knowledge to make the right call — and you need it fast because this is your first big strategic decision back from leave.

Blended ROAS is 2.8x but your VP wants 4x

The current 2.8x blended ROAS might be fine — or it might be terrible. You don't know because you can't separate branded from non-branded, category from category, or new from returning customers. The 4x target might be realistic or it might be a fantasy. You need the data to answer that.

From the community

Real voices, real frustration

We hired a PPC agency — they set up one campaign for 1,000 products across 10+ categories. Is this normal or lazy?
Reddit r/PPC
How do you prove Google Ads are driving INCREMENTAL revenue, not just capturing demand?
Reddit r/ecommerce
My VP wants to see a clear ROI report but our attribution is a mess
Reddit r/marketing

You don't need to become a Google Ads expert. You need enough knowledge to ask the right questions, evaluate the answers, and make the agency/in-house decision with confidence. That's a 20-hour investment, not a career change.

The transformation

What changes when you have a system

Campaign Structure

1 PMax campaign for 1,200 products (agency-built)Category-segmented campaigns with proper asset groups

Blended ROAS

2.8x (can't separate branded, non-branded, or categories)4x+ with category-level optimization and brand exclusions

Incrementality Proof

None — VP questions if Google Ads is additiveGeo-based incrementality tests proving lift

Strategic Confidence

Can't evaluate agency recommendationsKnowledge to make informed agency/in-house decision

This is for you if

  • You manage Google Ads at a mid-market e-commerce company ($5M+/year)
  • You're evaluating your PPC agency's performance
  • Your VP or CEO wants proof of incrementality from paid channels
  • You're considering bringing Google Ads management in-house
  • You need to level up your Google Ads knowledge to make strategic decisions

This is NOT for you if

  • You're a solo e-commerce founder (check our other persona pages)
  • You're looking for someone to manage your ads for you
  • You're already a Google Ads expert who just needs execution help

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Get the Knowledge to Make the Right Call.

Agency or in-house? Keep the current setup or restructure? Your VP wants a recommendation and you need the technical knowledge to back it up. Start with the Diagnostic Toolkit to audit what your agency actually built — then you'll know exactly what to recommend.