Single Grain (Paid Ads) review
Worth a conversation about Paid Ads once the caveats below are settled.
Founder-led (Eric Siu) revenue-marketing agency with sophisticated Mixed Media Modeling attribution and a strong content platform, but very broad (SEO+paid+content+creative+CRO across 5 ad channels), a small team for that breadth, and thin Clutch reviews (12).
Pricing: $10,000 Reported — not published by the agency
No published pricing; ~$10k+ minimum project; thin Clutch base (12 reviews). source ↗
How it scored
Every dimension is scored against this discipline’s published rubric. Open one to see the claim it was scored on, what the rubric measures there and how much it weighs, and where the evidence came from.
How we scored this
We read the agency’s public record first-hand — its site, pricing, case studies and independent reviews — and score what is checkable: what is published, not how it is phrased. There is no keyword counting or sentiment scoring. The label is a judgment on those facts, which is why each dimension shows the fact that decided it, the band it was judged against, and the sources — so you can check the call, and tell us if you think it is wrong. The full method, and who pays, is on how we vet.
Vertical & stage fitAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 25% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 14 · Strong 6 · Adequate 14 · Weak 3. The typical agency here scores Strong, and 20 of them score higher than this one.
What this dimension measures: Does the agency have named clients in the buyer's vertical at the buyer's stage? Tangential vertical or adjacent stage scores 3. Mismatched (e.g.
Scores high — Direct sector + stage match scores 5.
Scores low — lifestyle B2C agency pitched for B2B SaaS) scores 1-2. Generic 'we serve everyone' positioning scores 2.
What we found — Serves SaaS, tech, ecom, B2B and B2C, broad rather than one vertical. That is between the two bands, which is why it scored Adequate.
B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.
SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.
Evidence: inferred — our reading of indirect evidence, not a documented fact.
Channel depth (not breadth)Weak
Weak — 2 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 13 · Strong 5 · Adequate 15 · Weak 4. The typical agency here scores Adequate, and 33 of them score higher than this one.
What this dimension measures: Best agencies are deep on 2-3 named channels, not jacks-of-all-trades.
Scores high — A single-channel specialist or 2-3 channel specialist matching the buyer's needed channels scores 4-5.
Scores low — An agency claiming Google + Meta + LinkedIn + TikTok + programmatic + CTV + Reddit usually scores 1-2 (spread thin). If the agency's deep channels don't match the buyer's need, score 2-3.
What we found — Very broad: SEO + paid + content + creative + CRO across 5 ad channels. That is what the low band describes, which is why it scored Weak.
programmatic — automated auction-buying of ad space across the web, rather than direct placements.
CRO — conversion-rate optimization: raising the share of visitors who buy or sign up through structured testing, not redesign by taste.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Stronger here: AdVenture Media Group scores Excellent on the same dimension.
Attribution & measurementStrong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 20% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 13 · Strong 12 · Adequate 7 · Weak 5. The typical agency here scores Strong, and 13 of them score higher than this one.
What this dimension measures: Does the agency use server-side tracking, MMM, incrementality testing, or proper multi-touch attribution?
Scores high — Sophisticated measurement (server-side tracking, GA4 + warehouse, incrementality lifts) scores 4-5.
Scores low — In 2026 platform-reported ROAS (in-platform Meta/Google numbers) is increasingly broken — reliance on it as primary measure scores 1-2. Silence on attribution scores 2.
What we found — Mixed Media Modeling to balance spend, sophisticated measurement for 2026. That is the high band above, which is why it scored Strong.
On the record — “Single Grain runs paid across Google, Microsoft, Meta, LinkedIn, and TikTok with Mixed Media Modeling (founded 2009, Eric Siu).” singlegrain.com ↗
attribution — working out which marketing touch actually caused a sale. Good practice names its model and its blind spots; bad practice quotes each ad platform’s self-graded numbers, which overlap and overclaim.
ROAS — return on ad spend: revenue per dollar of advertising. Platform-reported ROAS overstates; independently measured ROAS is the honest version.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Creative capabilityStrong
Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 3 · Strong 14 · Adequate 13 · Weak 7. The typical agency here scores Adequate, and 3 of them score higher than this one.
What this dimension measures: In 2026 creative is the lever, not bidding. Look for video creative capability specifically — most B2B agencies are weak here.
Scores high — In-house creative team that ships and iterates ads weekly scores 4-5.
Scores low — Agencies that hand creative back to the client or rely on stock template variations score 1-2.
What we found — Performance-creative capability is part of the offering. That is the high band above, which is why it scored Strong.
B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.
Evidence: inferred — our reading of indirect evidence, not a documented fact.
Account ownership & seniorityAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 10% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 6 · Strong 9 · Adequate 12 · Weak 9 · Poor 1. The typical agency here scores Adequate, and 15 of them score higher than this one.
What this dimension measures: Who actually runs the buyer's account day-to-day? Look for who would be on the kickoff call vs. who would be in the trenches.
Scores high — Named senior strategist with 5+ years on the account scores 4-5.
Scores low — Account-manager-only with a strategist behind the scenes scores 2-3. Unnamed pool / no clear owner scores 1.
What we found — Small team for the breadth; founder-driven brand. That is between the two bands, which is why it scored Adequate.
On the record — “Small team (10-49) for its breadth and enterprise clients; Glassdoor 3.6 with growing-pains reviews.” saleshive.com ↗
Evidence: inferred — our reading of indirect evidence, not a documented fact.
References & verifiable case studiesAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 10% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 12 · Strong 15 · Adequate 6 · Weak 4. The typical agency here scores Strong, and 27 of them score higher than this one.
What this dimension measures: Check if named clients still publicly use the agency (LinkedIn employer connections, recent campaigns).
Scores high — Named clients with concrete dated results (CAC delta, ROAS, attributable revenue, cohort metrics) score 4-5.
Scores low — Testimonials without numbers score 1-2. Case studies dated 2024 or earlier used as primary evidence score 1-2 — the agency probably peaked.
What we found — Thin Clutch base (12); big aggregate claims (500+ clients, 3.2x ROI). That is between the two bands, which is why it scored Adequate.
On the record — “No published pricing; ~$10k+ minimum project; thin Clutch base (12 reviews).” clutch.co ↗
CAC — customer acquisition cost: total sales and marketing spend divided by customers won — the number that says whether growth is affordable.
ROAS — return on ad spend: revenue per dollar of advertising. Platform-reported ROAS overstates; independently measured ROAS is the honest version.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Contract & pricing transparencyAdequate
Adequate — 3 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 5% of the total score.
Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 3 · Strong 8 · Adequate 14 · Weak 12. The typical agency here scores Adequate, and 11 of them score higher than this one.
Scores high — Month-to-month or 3-month terms with published retainer or % of spend pricing score 4-5.
Scores low — 12-month lock-ins score 2 (yellow flag). Bespoke-only quoting with no published anchor scores 1-2 — usually correlates with extracting more from less-savvy buyers.
What we found — No public pricing; $10k+ minimum per directories. That is between the two bands, which is why it scored Adequate.
On the record — “No published pricing; ~$10k+ minimum project; thin Clutch base (12 reviews).” clutch.co ↗
retainer — a fixed monthly fee regardless of hours or output — predictable, but worth tying to a defined scope.
Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.
Verdict
Single Grain (founded 2009, led by Eric Siu) is a well-known revenue-marketing agency running paid across Google, Microsoft, Meta, LinkedIn, and TikTok with Mixed Media Modeling to balance spend, genuinely more sophisticated attribution than in-platform ROAS, plus 500+ companies served and a 3.2x average ROI claim. The concern the rubric surfaces is breadth over depth: it does SEO, paid, content, performance creative, CRO, and analytics with a relatively small team (10-49) for that range and enterprise-level clients, its public Clutch base is thin (12 reviews), and the brand is heavily tied to Eric Siu's personal platform. Strong on measurement and content credibility; validate that your specific paid channels get deep, senior attention.
What you can do next
Koolav can make the introduction and handle the back-and-forth, or you can go straight to the agency.
This agency has not published a paid trial. What a paid trial is.
What we verified
Each claim below was checked against a named source, last on 2026-07-19. Follow any of them and check for yourself — that is the point of publishing them.
- Single Grain runs paid across Google, Microsoft, Meta, LinkedIn, and TikTok with Mixed Media Modeling (founded 2009, Eric Siu). singlegrain.com ↗
- Small team (10-49) for its breadth and enterprise clients; Glassdoor 3.6 with growing-pains reviews. saleshive.com ↗
- No published pricing; ~$10k+ minimum project; thin Clutch base (12 reviews). clutch.co ↗
What other platforms say
Sophisticated measurement and strong content brand, but spread across many services with a small team and thin public reviews.
These are other platforms' numbers, not ours. We report them because they are part of the picture, and we do not average them into our score — our score comes from the published rubric above.
Red flags
- Very broad service range for a small team
- Founder-dependent brand
- Thin Clutch review base
What we could not verify
- Depth/seniority on any single ad channel
- Pricing anchor
Sources
- https://www.singlegrain.com
- https://saleshive.com/vendors/single-grain
- https://clutch.co/profile/single-grain
Others we evaluated in Paid Ads
Same rubric, same evaluator, same date range — so these are directly comparable to the verdict above.
See all 38 Paid Ads agencies we evaluated →
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Evidence moves a verdict. Money never does — no agency pays us for a listing, a placement, or a re-review. Whatever we conclude we publish, including that the verdict stands.