US COMPANY · GLOBAL SELLERS · AMAZON US FIRST

Stop the expensive
mistakes first.

Verifiable judgment before you burn inventory and ads.

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An Amazon seller reviewing a product-selection judgment and evidence scorecard

Selling on Amazon US means judging market opportunity, competition, economics, compliance, and supply constraints together. We help you see what is worth pursuing and what still needs proof before inventory or ad spend; China supplier research is available as a separate step.
Compliance is part of the same decision: Amazon's own detail-page rules prohibit Phone numbers, physical mail addresses, email addresses, or website URLs in titles, bullet points or images (Amazon, Product Detail Page Guide).

Learn how to assess a product
Front-loaded risk control

Use verification reports to stop wrong products, weak factories, and wasted ads.

Judge spend before you spend

One bad first order plus a few weeks of ads can burn $10,000–$50,000+. We judge spend before you spend.

Built for global sellers

Not China-only. English delivery, US contracting, and supply-chain support for sellers without factory access.

We stand behind the method and deliverables—not sales, rank or profit.
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Y-ANON-2405-17Existing product diagnosis (anonymized)

Issue priority

PriorityIssueImpactLikelihoodDirection
HighMain image riskText and labeling exposure8.7 / 10HighHighCompliance
MedListing gapsBuying context incomplete6.4 / 10MedHighContent
MedWeak review mixLow-star share elevated6.1 / 10MedMedExperience
LowAverage pricing powerNo clear peer advantageLowMedPricing
Demand
7.2 / 10
Compliance
8.0 / 10
Competition
6.3 / 10
Return
7.6 / 10
Conditional proceed

Fix the flagged risks before scaling.

This sample is anonymized; data and results illustrate report structure only.

A FIRST DECISION LESSON · 01

New to product selection?
Learn what good looks like.

A good product is not simply the biggest seller. It has real demand, a reachable entry point, workable economics, and a fit with your budget and capabilities. Learn the four gates first.

GATE ONE · DEMAND EVIDENCE

Look at the trend and buyer problem, not one sales figure.

A stronger signal

Searches persist across months, and reviews repeat a problem buyers still need solved.

A warning sign

Using category revenue alone as proof while ignoring seasonality, buyer segments, and sales concentration.

Practice rule: “Not enough information yet” is a valid answer. Identify the next fact to verify; do not turn a guess into a conclusion.

Read the full case: how evidence leads to a stop decision

01 / BEFORE THE BURN

Pay $999–$3,999 to validate,
before you burn $10,000–$50,000+.

Wrong selection, an unreliable first factory order, or weeks of weak PPC turn cash into sunk cost. Our job is to close advertising and product risk before they become invoices.

Note: $10,000–$50,000+ is an illustrative range for common first-order and ad burn—not promised savings or typical client results.

¥1B / ≈ $139M

Ryndix core work is led by a former product manager from an Amazon seller with RMB 1B in annual sales. At an indicative 7.2:1 rate, that is about US$139M; prior employer scale does not represent client results.

Contracted by a US company
Email and ticket record
No account credentials

CREDIBILITY / OPERATOR RECORD

Behind every verdict is an operator's record.

Ryndix work is led by Marvin Tan — six years operating Amazon cross-border e-commerce across portfolio selection, P&L tiering, listing and PPC growth, and Chinese supply-chain execution. The figures below are his own operating history and are publicly verifiable.

6 yrs

Amazon cross-border e-commerce

1,000+

candidate SKUs screened

~20%

stopped before build

27 → ~80%

27 SKUs drove ~80% of revenue

0.3% → 1.2%

flagship listing CTR

9 → 2–3 mo

new-category launch cycle

Historical figures from the operator's own record — not client engagement results, and not a promise of future outcomes.

CREDIBILITY / MARKETPLACE

Amazon marketplace brand matrix.

Anker Creality DJI Eufy Haier Hisense Insta360 SHEIN Soundcore TCL

品牌标识仅为市场识别示意，不代表官方合作、代言或隶属关系。Ryndix 是 Ylemos Inc. 旗下产品与服务品牌。详见 免责声明。

02 / WHERE SELLERS GET STUCK

New to product selection, or unsure what good looks like?
Learn the decision one step at a time.

Many sellers are not short on effort. They lack a decision method: where to start and how to tell an opportunity from a trap. Begin with demand, room to enter, unit economics, and your own constraints.

Seller comparing product samples, supplier quotes, costs and marketplace data
  1. 01

    Gap one: not knowing where to start

    A busy bestseller list does not prove an opportunity. Start with a recurring buyer problem, then check demand, competition, compliance, and a difference you can deliver.

  2. 02

    Gap two: not knowing what good looks like

    Sales, low review counts, or high gross margin cannot prove a product is worth pursuing on their own. Weigh demand, entry difficulty, pre-ad contribution, compliance, and cash together. When evidence is thin, the answer is “not enough information yet.”

  3. 03

    They burn ads before they validate the product

    PPC launches while the listing is still weak, images are non-compliant, and differentiation is unclear. Traffic arrives; durable orders do not.

  4. 04

    Inventory and tooling lock cash too early

    First orders and molds placed before opportunity and constraints are proven push sunk cost into five figures. Once cash enters a container, correction costs rise sharply.

  5. 05

    Compliance and platform risk are handled too late

    Labels, certificates and category gates are often treated as post-launch chores. A review or takedown turns prior inventory and ads into accounting losses.

  6. 06

    Managed ops packages dilute judgment

    Many providers sell operations first and judgment last. Accounts are handed over, scope blurs, success stays undefined. Sellers need reviewable conclusions—not endless running.

QUESTIONS BEFORE SPEND

Seven questions deserve
clear answers before spend.

These are not testimonials or implied case results. They are the decision questions each work order must answer.

01 / SELECTION

P01 joins demand, competition, economics, compliance, MOQ and development spend in one constraint frame.

02 / SUPPLY

P02 provides a desk-researched shortlist, priority quotes and document status—not a factory audit or quality guarantee.

03 / LANDING

P03 consolidates specs, cost, packaging, selling points, competitors, compliance and route—excluding listing, images and launch planning.

04 / CONTENT

Listing copy, image strategy and final images are separate work orders. Buy only what is currently needed.

05 / ADS

Ad diagnosis, launch planning, restructure planning and review are separately priced. Ryndix provides plans, not account operation.

06 / RISK

Every deliverable identifies facts, assumptions, limits and next validation steps—without promising sales, rank, profit or 100% success.

07 / EXCLUSIVITY

No. Your products, suppliers, costs and budgets are confidential—never resold, published or used as a named example. Selection work orders (P01–P03) also carry an exclusivity commitment: the same specific product direction will not be recommended to another customer for six months after delivery. We decline conflicting work rather than issue overlapping recommendations. See Service Terms, section 7.

03 / WHY RYNDIX

Advantages are not slogans.
Each one is independently buyable.

Each advantage below stands alone. Start with selection validation or a live-product diagnosis. Stop after any step.

Analytics dashboard used for risk and performance review
01

Front-loaded risk control

We put invest-or-stop judgment before ads and inventory. Reports keep facts, judgment and open risks separate—so unknowns are never dressed up as certainty.

Product opportunity research with samples, cost sheets and marketplace analytics
02

Built for “I don’t know what to sell”

Selection is where global sellers get stuck most often. P01 compresses market opportunity, competitive structure, margin room, compliance cost, MOQ and development spend into one constraint check—not a trendy list.

Manufacturing floor representing supplier and factory landing
03

A supply-chain bridge for non-China sellers

Sellers outside China often have capital and market instinct, but no factory map. P02/P03 desk-research a shortlist, compare quotes/documents and assemble a landing pack; customers contract and pay suppliers directly—this is not a factory audit or quality guarantee.

Warehouse inventory representing stock and fulfillment risk
04

Protect five-figure ad and product spend

Wrong first orders, molds, and ad expansions easily clear five figures. Staged work orders let you pay for judgment at each gate—instead of gambling inventory and traffic in one move.

05

Operator-led—not support-scripted

Ryndix core delivery is led by a product manager who worked inside an Amazon business doing about US$139M (RMB 1B) in annual sales. Experience shapes the judgment frame—not an outcome promise.

06

Fixed scopes for global buyers

Ryndix is operated by Ylemos Inc., the US contracting, invoicing and payment entity. English or Chinese delivery; listing, images and ad plans are unbundled. No store login or managed operations.

Factory production for supply-chain landing
Quotes, MOQ, documents and compliance enter one decision pack
Warehouse representing inventory risk control
Validate before stocking—do not lock cash into containers early

04 / METHOD & BOUNDARIES

Professional judgment needs evidence—and boundaries.

01

Deliverable samples

Reports include issues, priorities, risks, rationale, next actions and methodology.

02

Method and boundaries

Judgment uses public information, client materials and available data; unknowns remain explicit.

03

Confirm before payment

Intake, scope, exclusions, price, timing and terms are confirmed before payment.

04.5 / CHECK IT YOURSELF FIRST

Before you buy, test your own data against the same standard.

Image compliance check, listing score—processed locally in your browser. Nothing uploaded, no login.

Open tools →

Every judgment call is tagged to one of the 14 nodes—seller anonymized, numbers real.

See cases →

RYNDIX SCAN / IPHONE

App Store: Ryndix: FBA Product Verdict · v1.1 ·

Ryndix Scan app icon

Photograph a product. Get the sourcing decision first.

Turn market signals, concentration, review pain points, margin assumptions, and virtual purchase intent into one actionable Decision Card.

  • Measured signals and unknowns are labeled separately—no invented numbers
  • Pay per scan credit. No subscription
  • Sign in with Apple protects credits, purchases, and scan history
Live on the App Store

Downloads depend on your Apple Account storefront. Ryndix Scan is not currently available on the China mainland App Store.

Download on the App Store
In mainland China? Start here:Free toolsCase study
Read the app privacy and data details Full app details
Illustrative Ryndix Scan decision card showing what to validate before ordering Illustrative Ryndix Scan evidence, unknown data, and simulated buyer feedback Ryndix Scan offers account-backed pay-per-scan credits with no subscription

05 / FIXED WORK ORDERS

Every step stands on its own.

Fixed prices map to defined scopes. Stop after any step; listing, images and launch planning remain separate. Global sellers starting from zero begin with selection validation; live sellers begin with diagnosis.

P01

Market, competition, economics, compliance, MOQ and development—built for sellers who do not know what to sell

7 business days$999
P02

5–8 desk-researched shortlist, 3 priority quotes and document status—supply bridge for sellers outside China; not a factory audit

10 business days$1,500
P03

Specs, cost, packaging, selling points, compliance and route

10 business days$1,500

The three stages total $3,999, each paid and delivered independently—not a mandatory package. Price excludes samples, testing/certification, tooling, photography/complex 3D, freight, goods, inspection, ad spend, taxes and third-party fees. Customers contract and pay suppliers directly; Ryndix performs desk research and document/quote comparison and does not guarantee supplier performance, certificate validity or product quality.

06 / ORDER PROCESS

Field intake first.
Payment last.

Structured fields confirm scope and price. Checkout sends only email, service ID and work-order reference to PayPal—no large-file upload.

  1. 01

    Enter the right order by stage

  2. 02

    Structured fields only—no large-file upload yet

  3. 03

    Required fields and scope only—no consulting conclusions

  4. 04

    Review scope, timing, terms and price

  5. 05

    Email updates and secure download

07 / START WITH RISK CONTROL

Buy one judgment that stops waste.

No product yet: start with $999 selection validation. Product already live: start with the $199 diagnosis. The goal is not to launch ads immediately—it is to close five-figure advertising and product risk first (illustrative, not promised savings).