What is the difference between a deal sourcing platform and a buy-side broker?

A platform sells information and leaves the work to you; a buy-side broker sells you a person who does the work and is paid partly on the outcome. The platform is cheaper, scales across mandates and never makes a call. The broker is more expensive, does not scale, and owns a relationship you could not build yourself in the time available.

What does buy-side deal sourcing cost?

It depends entirely on the model. A self-directed marketplace publishes $299 per month. An outsourced outbound retainer publishes $4,000 to $8,000 per month plus a success fee of 1–2% on close, with a flat-retainer variant at $1,000 to $3,000 per month. Data platforms generally do not publish at all: Grata's own referral examples use $20,000 and $30,000 contracts, and third parties report a PitchBook seat around $12,000 to $20,000 a year.

Is retained search worth it for a lower middle market mandate?

It is worth it when the mandate is specific, funded and time-bound, and when nobody internally has the hours. It is a poor purchase when the thesis is still moving, because you pay for a search that changes shape halfway through. Get the mandate written down before you engage anybody on a retainer.

Can you combine these models?

Most firms do, usually by accident. The failure mode is that each one lands in a different inbox and nobody has a single view of the pipeline. If you run more than one, make one of them the system of record.

Which model covers intermediated deals?

Marketplaces and brokers do; outbound retainers explicitly do not, and data platforms do not carry deal status at all. This matters more than it sounds, because most sellers below $10M of EBITDA who run a process run it through an advisor.

Comparison

Platform, buy-side broker, or retained search

These are not competing products, they are different purchases. A platform sells you information. A marketplace sells you access to deals someone else listed. A retainer sells you outreach capacity. A buy-side broker or retained search sells you a person who owns the outcome. The right question is not which is best — it is which part of your sourcing you are actually short of.

Last reviewed 2026-09-20

Request a mandate consultation

Side by side

Five purchases, and what each one actually delivers

	Data platform	Self-directed marketplace	Outsourced outbound retainer	Buy-side broker / retained search	Platform plus origination team
What you are buying	Information. A searchable universe of companies with enrichment and scoring.	Access. A curated set of deals other members listed, which you work yourself.	Capacity. A team that maps and cold-calls owners on your behalf.	Accountability. A named person who owns the search and is paid on the outcome.	A sourcing platform and a human origination team on the same pipeline.
Who makes the first contact	You.	You. These providers state they are not hands-on matchmakers.	The provider, from its own domains and calling team.	The broker, personally.	Our origination team. We approach the owner or the intermediary, qualify the opportunity and run the outreach, so you enter the process with a foothold.
Channels covered	Company universe only. No deal status, no process information.	Listed deals only, and only the ones members chose to post.	Off-market only. The published stance of this model is to avoid brokered processes.	Usually off-market plus the broker's own relationships. Varies entirely with the individual.	Off-Market, Pre-Market and On-Market in one pipeline, scored against a documented mandate.
Where the deliverable stops	A scored list and contact records.	An introduction.	A qualified founder meeting with a memo.	Typically through LOI, sometimes to close.	It does not stop at a list or a meeting. We hand over a verified deal with its file assembled, and we do not negotiate, structure or represent sellers.
Published price anchor	Generally none. Grata and PitchBook both gate pricing behind a demo. Grata's own referral page uses $20,000 and $30,000 contracts as examples; third parties report a PitchBook seat around $12,000 to $20,000 per year.	$299 per month, $149 for the first month, no success fee.	$4,000 to $8,000 per month plus a success fee the provider describes as 1–2% on close. A flat-retainer variant publishes $1,000 to $3,000 per month with no success fee on the standard tier.	Rarely published. Typically a monthly or milestone engagement fee plus a success fee on close, negotiated per search.	No price table on this site. What OmniSource costs is published on biznexus.com as part of membership and retained search.
Contract shape	Annual seats, reported as auto-renewing.	Month to month.	Month to month, usually exclusive to one client per sector and geography.	A fixed-term engagement with a defined mandate.	An engagement rather than a subscription.
Time to a first conversation	Immediate, if you have people to make the calls.	Immediate, limited to what is listed.	Typically 40 to 65 days on the retainer model, 60 to 90 on the flat-retainer variant, per the providers' own published tables.	Weeks, depending on the broker's existing network.	The intermediated channels are immediate; off-market outreach runs on the same timescale as any origination program.

Two of the five columns describe providers we have not named. That is a standing rule rather than an oversight: we do not put a named comparison page in front of a smaller competitor. Their prices are their own published ones, read on their own pricing pages on the dates recorded in the sources below.

We have not put an OmniSource price in the table either. This site carries no price table; what OmniSource costs is published on biznexus.com as part of membership and retained search, so the numbers live in one place and cannot drift apart.

Prices in this category move without announcement. Anything here is only as good as the review date at the top of the page.

Our read

Who each one is right for

The table above is fact, sourced and dated. This section is judgment — ours, and we have an interest in it. Read it that way.

You have people and no list

Buy data. It is the cheapest fix for that specific gap and the one that scales best. A platform seat turns an undefined market into a workable short list in an afternoon.

You have a list and no hours

Buy capacity. A second database makes it worse. Whether that is a hire, a retainer or an outside origination team depends on how long you need it and whether the work is seasonal.

You are one person with a narrow thesis

A self-directed marketplace at a few hundred a month is a rational first purchase, and you can cancel it. The ceiling is that you only ever see what somebody chose to list.

You want one named person accountable

A buy-side broker or a retained search is the only model that sells you accountability. It is also the most expensive and the most dependent on the individual. Diligence the person, not the firm.

Your mandate spans all three channels

Most deals below $10M of EBITDA are intermediated, and off-market takes months. A program covering one channel is covered on a lag. That is the argument for a single pipeline across all three rather than a stack of point solutions.

You are testing, not committing

Start with the cheapest reversible thing. A month-to-month marketplace or a single data seat tells you where the gap really is before you sign a retainer, and the answer is often not the one you expected.

FAQ

Questions buyers ask about this

What is the difference between a deal sourcing platform and a buy-side broker?: A platform sells information and leaves the work to you; a buy-side broker sells you a person who does the work and is paid partly on the outcome. The platform is cheaper, scales across mandates and never makes a call. The broker is more expensive, does not scale, and owns a relationship you could not build yourself in the time available.
What does buy-side deal sourcing cost?: It depends entirely on the model. A self-directed marketplace publishes $299 per month. An outsourced outbound retainer publishes $4,000 to $8,000 per month plus a success fee of 1–2% on close, with a flat-retainer variant at $1,000 to $3,000 per month. Data platforms generally do not publish at all: Grata's own referral examples use $20,000 and $30,000 contracts, and third parties report a PitchBook seat around $12,000 to $20,000 a year.
Is retained search worth it for a lower middle market mandate?: It is worth it when the mandate is specific, funded and time-bound, and when nobody internally has the hours. It is a poor purchase when the thesis is still moving, because you pay for a search that changes shape halfway through. Get the mandate written down before you engage anybody on a retainer.
Can you combine these models?: Most firms do, usually by accident. The failure mode is that each one lands in a different inbox and nobody has a single view of the pipeline. If you run more than one, make one of them the system of record.
Which model covers intermediated deals?: Marketplaces and brokers do; outbound retainers explicitly do not, and data platforms do not carry deal status at all. This matters more than it sounds, because most sellers below $10M of EBITDA who run a process run it through an advisor.

Sources

Every figure on this page, and where it came from

Competitor pricing changes without announcement. Each line records what the claim supports, the page it came from, the date we read it, and whether it is the vendor’s own published claim or a third-party report we could not confirm with the vendor. Two providers are described by category rather than named, and their links are withheld for that reason — we do not put a named comparison page in front of a smaller competitor. Their prices are their own published ones.

01
Grata does not publish prices. Its pricing page names three tiers — Growth, Scale and Alpha — with no dollar figures; every button is a demo request. The Growth tier is named for family offices and independent sponsors, and lists access to a network of active advisor mandates.
https://grata.com/pricing · observed 2026-09-20 · Vendor's own page
02
The only dollar figures Grata publishes anywhere on its own site are on its referral page, whose worked examples use a $20,000 contract and a $30,000 contract.
https://grata.com/referral · observed 2026-09-20 · Vendor's own page
03
PitchBook does not publish prices. Its pricing page is a request form, and states that pricing varies with seat count and firm type.
https://pitchbook.com/pricing · observed 2026-09-20 · Vendor's own page
04
Third-party reports put a single PitchBook seat in the region of $12,000 to $20,000 per year. A procurement aggregator reports a median of $31,875 per year across 132 recorded purchases. Public US federal award records have been analyzed at $7,000 to $10,500 per seat on contracts of 5 to 21 seats. None of these are confirmed by PitchBook.
https://www.vendr.com/marketplace/pitchbook · observed 2026-09-20 · Third party, not vendor-confirmed
05
A self-directed private deal marketplace serving this market publishes buy-side access at $299 per month, $149 for the first month, month-to-month with no success fee, covering deals under $150M, with a monthly credit allowance rather than a deal cap. Named here by category only.
Observed 2026-08-21 · Provider's own published pricing page, not linked (see note)
06
An outsourced outbound origination firm serving this market publishes a retainer of $4,000 to $8,000 per month plus a success fee it describes elsewhere as 1–2% on close, month-to-month, targeting companies at $1M to $10M of EBITDA, exclusive to one client per sector and geography, with a first qualified conversation typically 40 to 65 days after signing. Its published deliverable is a qualified founder meeting with a memo. A flat-retainer lead-generation model in the same group is published at $1,000 to $3,000 per month with no success fee on the standard tier and a first conversation at 60 to 90 days. Named here by category only.
Observed 2026-09-20 · Provider's own published pricing page, not linked (see note)
07
BizNexus publishes what OmniSource costs as part of its membership and retained search offerings on biznexus.com. This site carries no price table; the figures live on one page so they cannot drift apart.
https://www.biznexus.com/compare · observed 2026-09-20 · Vendor's own page

The seller-side and advisor-side view, on biznexus.com

BizNexus maintains the same comparison written for readers on the other side of the table, along with the published pricing for BizNexus memberships and retained search. This page is the buyer-side version with the current price anchors.

https://www.biznexus.com/compare/buy-side-broker-vs-deal-sourcing-platform

Mandate consultation

Bring your mandate.

Twenty minutes with our team. Bring the buy criteria and we will walk them against live coverage across Off-Market, Pre-Market and On-Market — including where coverage is thin.

Request a mandate consultation

Or read how the pipeline works first.