# CS-20: Trustworthy second-hand listings

Category: Commerce & marketplaces
Level: Advanced
Suggested duration: 4–6 weeks

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

## Problem
A hypothetical resale marketplace mixes vague condition claims with incomplete photos. Investigate how a listing can communicate known defects, evidence and unanswered questions without pretending the platform has verified every item.

## People to learn from
Buyers and sellers of used electronics

## Core scope
- Create a listing
- inspect evidence
- ask a question

## Research questions
- What evidence changes buyer confidence?
- How can sellers describe condition consistently?

## Edge cases
- Missing accessory
- inconsistent description
- reported listing

## Specific artefact
A condition framework and evidence-led listing design

## Evaluation question
Can buyers distinguish seller claims from verified information?

## 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-20, 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/