# CS-54: Quick-commerce substitutions and refunds

Category: Commerce & marketplaces
Level: Intermediate
Suggested duration: 3–4 weeks

Original UXCharan practice scenario. Validate assumptions; do not present it as a commissioned client project.

## Problem
In a fictional 10-minute grocery app, items often go out of stock after the order is placed. Shoppers are surprised by substitutions or partial refunds. Explore how to set substitution preferences and communicate changes quickly and fairly.

## People to learn from
Urban shoppers ordering groceries for delivery within minutes

## Core scope
- Set substitution preferences
- approve or reject a change
- track a refund

## Research questions
- How do shoppers react when an item is replaced?
- What information do they need in the few seconds they look at the screen?

## Edge cases
- Shopper unreachable during packing
- substitute costs more
- refund delayed

## Specific artefact
A real-time substitution approval notification and screen

## Evaluation question
Can shoppers make a substitution decision in under 10 seconds and trust the final bill?

## Work to share
Problem and role; anonymised evidence; alternatives and rationale; task flow; prototype; accessibility considerations; testing findings; revisions and honest limitations.

## Request feedback
Share a viewable Figma, document or portfolio link with Saicharan on WhatsApp: https://wa.me/917093809350
Include CS-54, your name, project stage and your main feedback question. Confirm review scope, timing and any fee directly.

## Methods
- Research planning: https://www.gov.uk/service-manual/user-research/plan-user-research-for-your-service
- Research consent: https://www.gov.uk/service-manual/user-research/getting-users-consent-for-research
- Design exploration: https://www.designcouncil.org.uk/resources/the-double-diamond/
- Usability testing: https://www.nngroup.com/articles/usability-testing-101/
- Accessible forms: https://www.w3.org/WAI/tutorials/forms/
- Portfolio storytelling: https://www.nngroup.com/articles/ux-design-portfolios/