Which Amazon agencies work with small sellers?
Amazon Agencies for Small Sellers: What The Shortlist Report Finds
4 firms lead, appearing in 34.1–39.0% of 410 AI responses. The sample cannot separate them, so we do not pretend it can.
Four firms lead
Marknology, Seller Adventures, Seller Accel and PPC Jumpstart come up most often here. They are close enough together that the order between them is not worth reading anything into.
Marknology160 of 410
Amazon PPC and growth services for bootstrapped and established brands in $500K–$10M range.
Seller Adventures153 of 410
Offers full Amazon account management including PPC, catalog, inventory and brand protection with plans starting at $399/month and month-to-month terms.
Seller Accel141 of 410
Provides PPC, listing optimization, creative, inventory and full account management specifically for private-label brands.
PPC Jumpstart140 of 410
Boutique Amazon PPC management on month-to-month terms for smaller and mid-sized brands.
Based on 410 ChatGPT responses to this question, collected August 8, 2026–October 29, 2026. Firms are counted once per response. How we measure.
The ranking
| Firm | Responses | Share | |
|---|---|---|---|
| Tier 1 4 firms, 34.1–39.0% | |||
| Marknologymarknology.comAmazon PPC and growth services for bootstrapped and established brands in $500K–$10M range. | 160 of 410 | 39.0% | |
| 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. | 153 of 410 | 37.3% | |
| Seller Accelselleraccel.comProvides PPC, listing optimization, creative, inventory and full account management specifically for private-label brands. | 141 of 410 | 34.4% | |
| PPC Jumpstartppcjumpstart.comBoutique Amazon PPC management on month-to-month terms for smaller and mid-sized brands. | 140 of 410 | 34.1% | |
| Tier 2 5 firms, 17.1–20.0% | |||
| Amplivusamplivus.comManages Amazon PPC with flat monthly pricing ($1K–$5K) and month-to-month flexibility for brands spending $10K+ monthly on ads. | 82 of 410 | 20.0% | |
| EmbarcManages Amazon operations for private-label brands in the $240K–$6M annual revenue range. | 77 of 410 | 18.8% | |
| Seller Sagesellersage.comProvides account management for Amazon brands in the $500K–$20M revenue range with month-to-month terms. | 73 of 410 | 17.8% | |
| Parker-Lambertparker-lambert.comProvides full-service Seller Central management, PPC and listings optimization for small brands. | 71 of 410 | 17.3% | |
| Sellers Umbrellasellersumbrella.comOffers month-to-month full account management covering PPC, listings, launches, creative, and daily operations for established brands, no long-term contracts. | 70 of 410 | 17.1% | |
| Tier 3 stands alone | |||
| Mission Pointmissionpoint.agency | 62 of 410 | 15.1% | |
Key findings
- Marknology, Seller Adventures, Seller Accel and PPC Jumpstart lead this sample, each named in 34.1–39.0% of 410 ChatGPT responses to the question “Which Amazon agencies work with small sellers?”, collected August 8, 2026–October 29, 2026.
- The gaps between Marknology, Seller Adventures, Seller Accel and PPC Jumpstart are inside the margin of error at 410 responses, so The Shortlist Report groups them in one tier rather than ranking them against each other.
- 10 firms cleared the reporting threshold on “Which Amazon agencies work with small sellers?” in ChatGPT as of October 29, 2026; the full table with response counts is below.
- PPC Jumpstart appears in 4 of the 15 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, Seller Adventures, Seller Accel and PPC Jumpstart, named in 140 to 160 of the 410 ChatGPT responses. They are grouped rather than ranked because the gaps between them are inside the margin of error at this sample size — one extra mention would reorder them, so an order would be reporting noise as a finding.
Tier 2 holds Amplivus, Embarc, Seller Sage, Parker-Lambert and Sellers Umbrella, named in 70 to 82 of 410 responses (17.1–20.0%). 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 Mission Point, named in 62 to 62 of 410 responses (15.1–15.1%). The sample does separate this firm from the tier above: the difference from the leading group is larger than the margin of error, which is what puts it in a tier of its own.
The test is McNemar’s at 95%, applied against the same 410 responses for every firm. The full reasoning, and what happened when we ranked one-to-N instead.
What the sample shows
4 firms lead this question: Marknology, Seller Adventures, Seller Accel and PPC Jumpstart. They appear in 34.1–39.0% of the 410 responses. The gaps between them are inside the margin of error at this sample size, so they are listed together rather than ranked against each other.
284 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–October 29, 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.