Which Amazon agencies work with small sellers?
Amazon Agencies for Small Sellers: What The Shortlist Report Finds
Marknology appeared in 45.0% of 240 AI responses to this question, ahead of everyone else.
Marknology leads
Marknology comes up more than any other firm on this question, by a clear margin.
Marknology108 of 240
Amazon PPC and growth services for bootstrapped and established brands in $500K–$10M range.
Seller Adventures86 of 240
Offers full Amazon account management including PPC, catalog, inventory and brand protection with plans starting at $399/month and month-to-month terms.
PPC Jumpstart79 of 240
Boutique Amazon PPC management on month-to-month terms for smaller and mid-sized brands.
Seller Accel74 of 240
Provides PPC, listing optimization, creative, inventory and full account management specifically for private-label brands.
Amplivus58 of 240
Manages Amazon PPC with flat monthly pricing ($1K–$5K) and month-to-month flexibility for brands spending $10K+ monthly on ads.
+5 more namedin the table
Based on 240 ChatGPT responses to this question, collected August 8, 2026–September 15, 2026. Firms are counted once per response. How we measure.
The ranking
| Firm | Responses | Share | |
|---|---|---|---|
| Tier 1 stands alone | |||
| Marknologymarknology.comAmazon PPC and growth services for bootstrapped and established brands in $500K–$10M range. | 108 of 240 | 45.0% | |
| Tier 2 3 firms, 30.8–35.8% | |||
| Seller Adventuresselleradventures.comOffers full Amazon account management including PPC, catalog, inventory and brand protection with plans starting at $399/month and month-to-month terms. | 86 of 240 | 35.8% | |
| PPC Jumpstartppcjumpstart.comBoutique Amazon PPC management on month-to-month terms for smaller and mid-sized brands. | 79 of 240 | 32.9% | |
| Seller Accelselleraccel.comProvides PPC, listing optimization, creative, inventory and full account management specifically for private-label brands. | 74 of 240 | 30.8% | |
| Tier 3 2 firms, 22.5–24.2% | |||
| Amplivusamplivus.comManages Amazon PPC with flat monthly pricing ($1K–$5K) and month-to-month flexibility for brands spending $10K+ monthly on ads. | 58 of 240 | 24.2% | |
| Seller Sagesellersage.comProvides account management for Amazon brands in the $500K–$20M revenue range with month-to-month terms. | 54 of 240 | 22.5% | |
| Tier 4 4 firms, 15.0–17.5% | |||
| Sellers Umbrellasellersumbrella.comOffers month-to-month full account management covering PPC, listings, launches, creative, and daily operations for established brands, no long-term contracts. | 42 of 240 | 17.5% | |
| Parker-Lambertparker-lambert.comProvides full-service Seller Central management, PPC and listings optimization for small brands. | 41 of 240 | 17.1% | |
| Mission Point AgencyManages Amazon growth and PPC advertising for consumer brands on month-to-month contracts. | 38 of 240 | 15.8% | |
| EmbarcManages Amazon operations for private-label brands in the $240K–$6M annual revenue range. | 36 of 240 | 15.0% | |
Key findings
- Marknology leads this sample alone, named in 108 of 240 ChatGPT responses (45.0%) to the question “Which Amazon agencies work with small sellers?”, collected August 8, 2026–September 15, 2026.
- 10 firms cleared the reporting threshold on “Which Amazon agencies work with small sellers?” in ChatGPT as of September 15, 2026; the full table with response counts is below.
- Marknology appears in 2 of the 13 Amazon agencies reports published by The Shortlist Report, the widest coverage of any firm named on this page.
- No firm paid to appear in this ranking; placement cannot be bought, and the counts come from ChatGPT responses rather than from submissions.
Why the tiers fall where they do
Tier 1 holds Marknology, named in 108 of 240 ChatGPT responses (45.0%). No other firm in this sample comes close enough to be grouped with it.
Tier 2 holds Seller Adventures, PPC Jumpstart and Seller Accel, named in 74 to 86 of 240 responses (30.8–35.8%). The sample does separate these firms from the tier above: the difference from the leading group is larger than the margin of error, which is what puts them in a tier of their own.
Tier 3 holds Amplivus and Seller Sage, named in 54 to 58 of 240 responses (22.5–24.2%). The sample does separate these firms from the tier above: the difference from the leading group is larger than the margin of error, which is what puts them in a tier of their own.
Tier 4 holds Sellers Umbrella, Parker-Lambert, Mission Point Agency and Embarc, named in 36 to 42 of 240 responses (15.0–17.5%). The sample does separate these firms from the tier above: the difference from the leading group is larger than the margin of error, which is what puts them in a tier of their own.
The test is McNemar’s at 95%, applied against the same 240 responses for every firm. The full reasoning, and what happened when we ranked one-to-N instead.
What the sample shows
Marknology leads on its own, named in 108 of the 240 responses to this question (45.0%).
236 firms were named at least once across the sample. 10 of them cleared the threshold of 2 responses and appear above; the rest were named once and are inside the noise.
How to read this
Firms are grouped into tiers, not ranked one to fifteen. A tier holds every firm whose 95% confidence interval overlaps the leader's, which is a long way of saying the sample cannot tell them apart. Order within a tier is arbitrary — read the counts, not the position.
Share is the percentage of responses that named the firm — not a quality score. A firm scoring low here may be excellent and simply under-written about online, which is a finding about its visibility rather than its work.
The same question was asked repeatedly because AI assistants do not answer identically twice. A single response would tell you almost nothing.
What this measurement does not tell you
- It is not a quality ranking. Share reflects how much has been written about a firm online, which is what an AI assistant reads. A capable firm nobody writes about scores low here.
- It is a reading from a date range, not a permanent standing. This sample was collected August 8, 2026–September 15, 2026; models change and so do their answers.
- It covers ChatGPT only. Other assistants answer differently, and we do not extrapolate across engines we have not measured.
- Order within a tier is arbitrary. Read the counts, not the position. Why we use tiers.
Cite this report
The Shortlist Report. (2026). Amazon Agencies for Small Sellers: What The Shortlist Report Finds. The Shortlist Report. https://www.shortlistreport.com/article/amazon-agencies-small-sellers
Underlying counts: CSV · JSON. Every answer they were counted from: plain text · JSON. All reusable under CC BY 4.0 with attribution.