# Client review: cart delivery update

**Northstar Outdoor · DF-1876 · Selected 30 days**

Illustrative working example prepared for a client conversation. This is not a customer result or an automatically generated client report.

## The decision

Prioritize investigation of the cart delivery selector with the team responsible for the storefront. Shoppers changing a delivery option encounter a recurring failure, concentrated on Mobile Safari in storefront@2.18.4.

## Why this issue

- **486 affected sessions** in the selected period.
- **$18,420 measured revenue loss**, associated with this issue in USD.
- **480 affected sessions** were compared with clean sessions at the same journey stage, device and environment. Within the same 30-minute window, 10% of affected sessions purchased against 34% of clean sessions.
- The pooled gap is 24.0 points with a 95% interval of 21.2–26.8 points, entirely above zero. About 115 missed purchases are valued at the $159.90 clean average order value. The 6 affected sessions without a comparable clean group are not priced. This is not confirmed lost revenue or a store-wide total.

[Inspect the example calculation](https://dozenfold.com/product#revenue-calculation)

## The proposed next step

The storefront developer investigates the delivery selector using the observed journey and uploaded source map at cart.ts:184. Check how a missing matching delivery rate is handled; the evidence does not yet establish the root cause.

The technical brief carries the stack, environment and source context. It deliberately excludes financial estimates so it can be shared in the developer's own workflow.

[Open the technical investigation](https://dozenfold.com/product#investigate)

## What we will review after a fix

Record the actual deployment and look for this issue on the new release, including relevant traffic and browser coverage. If it recurs, reopen the investigation. An absence of errors without observed activity is not evidence of a successful fix.

**Current status: investigation proposed.** No fix, recovered revenue or post-fix outcome is claimed in this review.