Independence is a claim, not a fact. Every comparison site in 2026 claims to be independent. Here's what ours actually means in practice: where the money comes from, what it does and does not influence, what we explicitly refuse, and what the realistic biases of an affiliate-revenue business model are. We're committing this to writing now, pre-launch, so it can be audited against the recommendations we publish later.
How we make money
vsMars earns revenue through affiliate links. When you click a "Check Price" button on a product page and buy that product on Amazon, Best Buy, or B&H Photo, we receive a commission — typically 1–4% of the sale price, paid by the retailer, not added to your price. The price you pay is identical whether you arrive via vsMars or directly. The affiliate program reimburses the retailer's customer-acquisition budget; we're a referral channel.
Our Amazon Associates store ID is versusmatrix-20. All Amazon links on the site carry this tag (or its equivalents for Amazon UK, DE, FR, IT, ES, JP, and other regional storefronts). You can verify this by hovering any Amazon link and inspecting the URL.
For other affiliate partners, we use the partner's standard tracking parameter. Affiliate links are always wrapped through our '/api/out' redirect endpoint so they're transparent and rewriteable if a program ends.
What we don't take money for
- No paid placement: no product can purchase a position in a guide, a Mars Score, a "Editor's Pick" badge, or a "winner" verdict in a head-to-head comparison. Brands sometimes ask. We say no.
- No paid reviews: our labs team accepts loaner units for testing; we return them after testing concludes or buy them retail to keep for long-term tracking. We do not accept "review samples to keep."
- No editorial influence from advertisers: we don't run banner advertising on the site. We don't have ad-buying clients with column-inch leverage.
- No press-trip junkets: tested products in our labs are either bought retail at full price (most common) or borrowed under a no-strings loan agreement (occasional, for items above $3,000 retail like flagship cameras).
- No sponsored content: there is no "sponsored" or "partner content" or "promoted by" content tier. Every piece on the site is editorially independent.
How affiliate revenue might subtly bias us
We're not going to claim it can't. The honest risks of any affiliate-revenue business model:
- Availability bias: a product not stocked by major affiliates is harder for us to monetize, so the incentive is to cover it less. We mitigate this by including non-affiliate retailers in our recommendation lists (manufacturer-direct, smaller stockists) and by explicitly covering "best from a brand we don't earn from" picks where they're the right answer.
- Conversion-rate bias: a product that converts well (low return rate, high satisfaction, attractive price-image) earns more per click. This might push us toward established brands and away from new entrants. We mitigate by tracking our own click-through-to-purchase data internally and explicitly featuring underdog picks in our guides — when the spec data justifies it.
- Newer-product preference: new launches drive more traffic and more affiliate clicks. We've structured editorial to update existing reviews rather than always favor the new — see the 'updatedAt' dates on guides, which reflect the actual refresh cadence, not artificial newness.
- Premium-product preference: higher-priced products earn higher absolute commissions. We mitigate by including budget picks in every guide, even where the affiliate commission per unit is minimal, and by explicitly flagging when a budget alternative is the better buy.
The editorial-affiliate firewall
The author of a comparison or guide does not see, and is not compensated based on, the affiliate conversion rate of the products they recommend. Mars Score calculation runs through 'src/lib/score/mars.ts' from the published per-category formula — no editorial override at scoring time. Score adjustments are version-controlled and require methodology documentation.
Our affiliate dashboard is accessible only to the operations team, not editorial. Editorial decisions are made without reference to per-product earnings data.
What we publish to make this auditable
- Mars Score formula: published in 'src/lib/score/mars.ts' and the methodology page. Reproducible from raw specs.
- Per-category weights: documented in how Mars Score weights were calibrated.
- Specifications: every spec value cited in a Mars Score is on the product page, sourced from manufacturer documentation.
- Source code: the site is built on open conventions. The scoring engine and the affiliate redirect logic are inspectable.
Why this matters
The comparison-site industry has a credibility problem. Most "Top 10" lists are ordered by affiliate commission rate, not product quality. The Mars Score is our attempt to publish a sortable, auditable, formula-driven alternative.
If you find a recommendation here suspicious, audit it: every Mars Score is reproducible from the published formula, every spec is sourced, every methodology change is documented in version control. See Mars Score methodology and our methodology page for the testing-and-scoring protocol.
If we ever take a paid placement, we'll mark it clearly and obviously with persistent labeling on the page and a note in our publishing log. To date: we have not, and we have no plans to.
If you have questions about a specific recommendation, contact us through the contact page; we publish every editorial correction transparently with the original text struck through and the correction dated.