# Price formatting ambiguity — dev spec
Site: camphollow.com · Priority 10 · Medium · Effort: Medium (2-5 days)

## Problem
Prices like $4795 are ambiguous and could be misread as $4,795 instead of $47.95.

## Evidence (from the live site)
> Prices shown on the page: $6 $4 $0 $3 $4795 $3995
> Prices shown on the page: $6 $4 $0 $3 $1595 $6.95

## Current state
notes: Prices lack decimal separators.

## Required change
notes: Format prices with decimal points.

## Acceptance criteria
- GIVEN a first-time visitor on the affected page
- WHEN the change is live
- THEN Format prices with decimal points.
- AND no layout regression at 375px / 768px / 1280px
- AND the changed control is keyboard-reachable with an accessible name

## Tracking
- Fire `cro_price_formatting_ambiguity` on interaction with the changed element
- Verify the event fires in BOTH variants before opening traffic

## Test plan
- Two-proportion z-test, 95% significance, 80% power
- 1,941,808 visitors per variant to detect a 2.0% relative lift
- Run at least one full business cycle; duration depends on traffic

## Rollback
Feature-flag the change; revert if the primary metric drops for 3 consecutive days.