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Guardian Due Diligence vs DueDilio

Side by Side

Guardian Due Diligence and DueDilio, attribute by attribute
AttributeGuardian Due DiligenceDueDilio
What It IsA quality-of-earnings boutique for searcher-sized deals, offering a full QoE, a QoE Light delivered in Excel without the report, Cash Proof, and an Advised QoE with founder hours, plus a Deal Closer's Society membership for part-time searchers and Guardian Grow, a post-close program priced with an equity earn-in. Founded in 2017 by Elliott Holland, with $600M+ in transactions and 1,500+ deals evaluated.A marketplace and concierge service that matches small-business buyers with vetted independent professionals and boutique firms for quality of earnings, legal, technical, and operational due diligence, plus pre-LOI and post-acquisition work. You describe your project and receive multiple scoped proposals within roughly 36 hours to 3 business days. Browsing is free; posting a project costs a $149 one-time access fee, and DueDilio earns a referral fee from providers on completed engagements.
CategoryDiligence & Earnings ReviewDiligence & Earnings Review
Pricing ModelOne-TimeOne-Time
What It CostsPublishes exact tiers on its services page: QoE Light $20k, full QoE $25k, Advised QoE $40k, with the caveat that pricing is for deals under $2 million in purchase price and larger deals are slightly more. Deal Closer's Society runs $24k one time or $3k per month for up to 18 months; Guardian Grow is $1k per month plus a 1 to 5 percent equity earn-in on a 3 year vesting schedule.No longer free to use as a buyer: browsing providers is free, but posting projects, receiving proposals, and messaging vendors costs a $149 one-time lifetime access fee, per its own pricing page (read Aug 13, 2026), which prices lifetime access at a single $149 payment. Its stated revenue is that access fee, an optional $399 one-time Founder Advisory Session, and a referral fee paid by the provider on completed engagements; its FAQ says it charges clients no commission or success fee. You still pay the hired provider’s quoted engagement fee on top.
Best ForSelf-funded searchers who want a QoE shop that lives in sub-$5M deals rather than a regional CPA firm fitting them inA first-time or self-funded searcher under (or approaching) LOI on a roughly $1M–$25M deal who has no existing bench of QoE firms or M&A attorneys and wants several scoped, priced proposals within days at no cost. Less useful if your deal is well under $1M (below their stated range) or you already have trusted diligence providers.
Where It FitsDiligence & Close the DealSource & Screen Deals, Diligence & Close the Deal, Operate & Grow the Business
Our VerdictShortlist them for QoE on searcher-sized deals; with the tiers published, the first call is a scoping call rather than a pricing discovery.A legitimately free, founder-run way for first-time searchers to get competing QoE, legal, and diligence proposals in days. Use it for speed and price discovery, but remember it's paid by the providers it recommends, so benchmark at least one outside quote.
Pros
  • Specialization is the pitch: QoE for searcher-sized, often SBA-financed deals is the entire practice
  • Publishes exact engagement pricing, which most QoE shops still make you call for
  • Claims to find 85% of major deal-breaking issues within 7 days, materially faster than typical CPA-firm timelines
  • Genuinely free for buyers with no obligation to hire; you can collect competing QoE/legal/DD proposals and use them as pricing leverage even if you walk away
  • Fast concierge matching: vendor commits to proposals within ~36 hours to 2–3 business days, and reviewers consistently confirm quick turnaround with founder Roman Beylin personally scoping projects
  • Covers the whole deal lifecycle in one place (pre-LOI valuation and deal modeling, M&A legal, post-LOI QoE/tech/commercial diligence, post-close fractional CFO/CTO), claiming 680+ projects and 220+ vetted providers as of Apr 2026
Cons
  • The published tiers hold only under $2 million of purchase price; larger deals are quoted slightly more without saying how much
  • Marketing-forward brand (the founder styles himself 'King of QoE'); calibrate marketing claims against references
  • Testimonial-heavy public reputation; ask for recent client references on deals your size
  • Commission-funded matchmaking cuts both ways: DueDilio only gets paid if you hire from its network, so provider quotes embed its cut and there's an inherent incentive to keep you in-network (one PE reviewer got good proposals but ultimately hired a cheaper local non-network firm)
  • Vetting depth is the vendor's claim, not independently auditable; you are still hiring independent contractors and boutiques, and outcome quality varies by the specific provider matched
  • Officially scoped to $1M–$25M transactions, so buyers of sub-$1M (and many sub-$500k SDE) businesses are below the stated sweet spot

Our take

Choose Guardian when you want a practice that lives in searcher-sized deals end-to-end and you value speed of pattern recognition over price shopping.

Choose DueDilio when you want competing quotes and a menu (QoE, legal, tech diligence) matched to your deal's size rather than one firm's model.