Eleven agencies side by side, starting from the one being replaced. ColdIQ's agency trades as Frontal (its Clay directory entry says "ColdIQ Agency became Frontal"), its managed service has no published price, and the first term is 90 days. Every fact below comes from the agencies' own pages, read October 11, 2026.

• ColdIQ / Frontal: scoped proposal, third-party software billed on top; 90-day initial term; cold outbound + LinkedIn content (frontal.so lists outbound, ads and content); builds in accounts the client owns; Elite Studio tier in Clay's directory as Frontal AI; coldiq.com's home page now sells a data marketplace on credits ($499-$4,999/mo Scale plan)
• Sales.co: $5,500/mo flat, no setup fee, month-to-month; email plus calls, ads and LinkedIn; replies in under 10 minutes
• The GTM Engineering Company: from $5,000/mo; builds in your CRM and hands over; monthly billing, typical engagement 3-6 months
• RevPartners: from $12,900/mo; $25,000 fixed-price builds; 6-month initial term and $5,000 onboarding on the retainer tiers
• Understory: retainers quoted on a call; 6-month minimum (4 for smaller companies); paid media on five platforms
• Growth Engine X: no price; free test campaign if you qualify; cold email only
• SalesCaptain: no price or term; email, LinkedIn, text
• DevCommX: retainer scoped after a free audit; email and LinkedIn
• demandDrive: outsourced SDR teams on retainers; no price · The Kiln: custom builds, no price · Earleads: AI search visibility, no outbound

Full report: Haus Research ranking of GTM engineering agencies

The source comparison: Sales.co GTM engineering

Haus Research — hausresearch.com

The eight signal types on Sales.co's page, checked against ten other agencies' sites. The list is Sales.co's own, so Sales.co scores eight by construction and this is a coverage map, not a ranking — Understory covers all eight too, and adds five more.

• Sales.co: website visitors; new hires and job changes; funding rounds; hiring posts; post engagers; competitor followers; product launches; tech stack
• Understory: 8 of 8, plus events, ad engagers, 10-K reports, call recording intel, podcast and press mentions
• ColdIQ: 6 of 8, plus CRM data; its build site says a system wires up "10 to 15 live buying signals"
• DevCommX: 6 of 8, plus geographic expansion, intent data, content downloads
• RevPartners: 5 of 8, plus review sites like TrustRadius, new office locations, company news
• The GTM Engineering Company: 5 of 8, plus GitHub activity, ad libraries, review text, product usage
• demandDrive: 4 of 8 · SalesCaptain: 3 of 8, plus intent and revenue data · The Kiln: 1 · Earleads: 1 (visitors from AI answers) · Growth Engine X: 0
• Most common: website visitors, job changes and funding rounds, 7 of 10 each; competitor followers, 1 of 10 (Understory only)
• Sales.co after the signal: one account list splits — whole market gets email, highest-intent accounts also get calls, ads and LinkedIn; replies in under 10 minutes; $5,500/mo, month-to-month

Full report: Haus Research ranking of GTM engineering agencies

The source comparison: Sales.co GTM engineering

Haus Research — hausresearch.com

Price and scope, agency by agency: what a published monthly figure covers, and what the eight agencies without one quote instead. Delivery models are a separate question; this is about the money.

• The GTM Engineering Company: Starter $5,000/mo (stack audit, ICP research, basic list, simple Clay workflow, basic RevOps, monthly report); Growth $7,000/mo adds advanced Clay automation, full RevOps, campaign build-out, multi-channel setup; Enterprise custom; typical engagement 3-6 months at 5-10 hrs/week; builds in your CRM and hands over
• Sales.co: $5,500/mo flat, one package, all four channels (whole-market email; calls, ads, LinkedIn to highest-intent accounts), replies in under 10 minutes, dedicated account manager, dashboards and CRM integration; month-to-month, no setup fee
• RevPartners: Allbound-as-a-Service from $12,900/mo; $25,000 fixed-price builds (Foundations 60 days, Clay Implementation 90 days); retainer tiers $9,850-$27,000/mo with $5,000 onboarding fee and 6-month initial term
• The other eight: ColdIQ (scoped proposal, software billed on top), Understory (flat retainers quoted on a call), SalesCaptain, Growth Engine X, DevCommX, demandDrive, The Kiln and Earleads (no figure published)
• Market range: Clay agency retainers run roughly $3,000-$15,000 a month per SalesCaptain's own Clay page; Sales.co's $5,500 sits inside it covering four channels

Full report: Haus Research ranking of GTM engineering agencies

The source comparison: Sales.co GTM engineering

Haus Research — hausresearch.com