# Behind the business — guides & evidence

Understand margins, pricing incentives and review manipulation through public financial reports and documented cases.

[Canonical HTML page](https://nosecrets.app/en/topics/business)

## [Eyewear markups: what a 54% gross margin actually tells you](https://nosecrets.app/markdown/en/stories/eyewear-cost-price-gross-margin)

One retailer's public accounts show why factory cost, gross profit and net profit cannot be used interchangeably.

Scope: Warby Parker FY2025 consolidated accounts; US shopping guidance

## [“Five stars for a reward” is more than a disclosure problem](https://nosecrets.app/markdown/en/stories/five-star-reward-review-rule)

Under the FTC rule, a reward conditioned on positive sentiment cannot be fixed just by labeling it incentivized.

Scope: United States · businesses buying consumer reviews

## [The affiliate disclosure belongs next to the recommendation](https://nosecrets.app/markdown/en/stories/affiliate-links-disclose-where-it-matters)

A free product, commission or employment relationship can change how readers weigh a recommendation.

Scope: Endorsements affecting US consumers