We tracked, deduplicated, and adjudicated 799 distinct entities that present themselves as Amazon FBA prep services, more than the ~777 the 2026-07-14 mark-recapture sweep estimated, so that estimate now reads as a floor. 24% are actually 3PLs or fulfillment platforms wearing the prep label, and 18% are dead. 368 were checked against our verification standard and are listed, each typed for what it actually is. 354 currently pass verification; 14 carry a visible flag or overdue-verification badge on their profiles. Another 109 operators are listed too, outside this census frame: 108 from the general 3PL sources we added on September 29, 2026 (our sweep of general 3PL directories and a third-party 3PL list) and 1 we found while verifying another operator. The July estimate never sampled any of those routes, so they are not counted here.
~777
24%
18%
368
fbaprepfinder's 2026-07-14 mark-recapture sweep estimates roughly 777 web-visible entities worldwide present themselves as Amazon FBA prep services. As of 2026-10-22, 799 are individually tracked (83% US). Only 135 of the tracked entities look like genuine prep specialists: 112 checked and listed plus 23 candidates in vetting. 24% are general 3PLs or fulfillment platforms where prep is a side offering, and 18% are dead.
Buckets partition the 799 tracked entities and sum exactly. No survivor funnels: machine verdicts appear as counts only, and unclassifiable entities stay in their own bucket.
368
112 prep specialists, 98 multi-service operators, 158 full 3PLs. Each was checked against the 4-point operator standard before listing. 354 currently pass verification; 14 carry a visible flag or overdue-verification badge on their profiles.
23
Look like genuine prep specialists; awaiting verification or on dated holds (most commonly the 12-month operating minimum).
55
Presented as prep centers but failed human verification: fabricated tenure, recycled testimonials, cloned sites, unverifiable identity.
191
General third-party logistics or multi-channel fulfillment where FBA prep is a sub-page, not the productized core.
146
Site unreachable or business defunct at last check. Dead is re-checked, not permanent; a July 2026 re-sweep found 13 previously dead sites back online.
16
Too thin or ambiguous to classify with confidence. An honest bucket, never counted as classified out.
As of July 2026, every listed operator carries an explicit type, because “prep center” turned out to be a label half the market borrowed at the time rather than a business model:
Prep specialist
112
Inbound FBA prep is the productized core: per-unit receiving, inspection, FNSKU labeling, polybagging, bundling, forwarding.
Multi-service
105
Prep-primary positioning with a real co-primary line: DTC or B2B fulfillment, contract packaging, sourcing, storage divisions. Disclosed on every profile.
Full 3PL
260
General fulfillment operations with a confirmed, substantive FBA prep service. Never ranked and never counted in specialist stats.
What stays pure: our ranked list and headline counts are prep-specialist territory. Directory inclusion is not ranking, and a paid tier never changes a type or a rank.
Discovery. Entities enter the census from multi-modal sweeps: search queries in four languages, competitor directory mining, seller community mentions, and inbound applications. Every entity is deduplicated by domain before counting. The census frame is that prep-intent discovery: operators from the general 3PL sources we added on September 29, 2026 (our sweep of general 3PL directories and a third-party 3PL list) are listed and typed like every other listing once they clear verification, but are not counted here, because the July coverage estimate never sampled those sources. The same holds for operators we found while verifying another operator: the July estimate never sampled that route either.
Classification. A machine first-pass proposes a label; every published, rejected, or held verdict is human adjudication against primary sources (state registries, Companies House, Impressum/VAT records, archived snapshots, third-party reviews). Machine labels alone never publish anything and appear here as counts only.
Coverage estimate (mark-recapture). On 2026-07-14, with 691 entities tracked, we ran three independent discovery agents that surfaced 136 candidates. Of those, 121 were already in our database, a 89% recapture rate. The Lincoln-Petersen estimator (691 x 136 / 121) puts the web-visible population at roughly 777. Operators with no web presence at all (cottage shops recruited inside seller communities) are invisible to this method and not counted.
Churn. Dead is a timestamped observation, not a tombstone: sites are re-swept, and recovered operators re-enter vetting. Published listings are re-verified on an ongoing cadence and flagged visibly when checks fail.
Our verification study names candidates excluded in early screens, with dates and reasons; not every candidate we turned down, then or since, is named there. The full census dataset is downloadable as JSON under CC BY 4.0.
Free to reuse with attribution; the full census dataset is published under CC BY 4.0. The cards re-render from the live counts and carry the date they were served, so an embed on your page stays honest as the census moves.
A dated card that re-renders from this study, so it cannot quietly go stale on your page. Free to use with attribution.
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Verification study
How we verify, the live check ledger, and candidates excluded in early screens, by name and reason.
Pricing Index 2026
Median US entry rate, tax-free premium, and setup-fee share, built only from published, dated rate cards.
Top prep centers, ranked
Prep specialists and prep-led multi-service operators checked against the standard, ranked editorially with the data behind each pick.
Run a prep operation or a 3PL with a real FBA prep service? Apply to be reviewed.
FBA Prep Pricing Index 2026
The per-unit pricing half of this census: median entry rate, tax-free premium, setup-fee prevalence.
Open the index →
FBA prep verification study
How the directories serving this market hold up when their own listings are checked.
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What we track and verify
The live roster behind these numbers, updated as the sweep runs.
Open the coverage report →
How we verify
The 4-point operator standard that decides which entities in this census count as published.
Read the method →
Top-ranked FBA prep centers
The operators that survived the census, ranked, with rate cards and verification dates.
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FBA prep 3PLs
The 3PLs in this market with a real FBA prep line: listed, labeled Full 3PL, and never ranked.
See the 3PL split →