Independent research desk
Seller tools, actually tested
Decide which seller software earns a place in your stack—and which subscription to skip—using visible methods, comparable data, and explicit limits.
Choose your path
What do you sell?
Digital downloads
Research and workflow tools for listing, keyword, and shop decisions.
Print-on-demand
Tool combinations for research, production, and subscription overlap.
Books & KDP publishing
Research and production stacks for low-content and independent publishing.
Median spread 137×
Seller tools disagreed 137×.
The Divergence Report compares the same 50 keyword inputs across four tools using 200 verbatim observations, without treating any proprietary estimate as marketplace truth.
Open the Divergence ReportStart here
Choose a segment, compare tools, then check the method.
Interactive decision tools
Start with the bottleneck. End with fewer subscriptions.
The calculator and finder expose every rule they use. Unavailable price records cannot create a recommendation disguised as a calculation.
Which tool fits this seller?
Five questions. Transparent rules. A valid result can be “none.”
Open finder True-Cost modelWhat does the usable plan cost?
Normalize billing, limits, and overlapping jobs before comparing tiers.
Open calculatorEvidence status
What is ready—and what is not
Research publication
Published evidence is searchable; unfinished product verdicts are not
The site publishes a completed cross-tool dataset, methodology, sourced guides, review structures, comparisons, seller segments, and decision tools. Product-specific performance conclusions remain outside the index until independent testing closes their page-level evidence gaps.
Start with the Divergence Report, a seller segment, a direct comparison, or the tool finder. Every route leads back to method, pricing provenance, and a clear reason to skip a tool.
Proprietary resource
When tools disagree, show the disagreement
The Divergence Report compares the same 50 keyword inputs across four tools without treating any proprietary estimate as marketplace truth. Its 200 verbatim observations power sortable records, direct-labeled charts, computed findings, and a citable CSV release.
The report is published with its method, sortable records, direct-labeled findings, downloadable CSV files, and explicit limits on what cross-tool disagreement can establish.
60-second finder
Build a stack from the bottleneck backward
The rule-based finder asks about platform, product type, revenue stage, budget, and the task consuming the most time. Results explain the rule used, display unresolved evidence, and never hide content behind email capture.
A result can recommend fewer tools. The absence of a subscription is a valid output.