The client’s brief
The client needed recurring price information for a specified list of mobile devices. The research brief covered five countries and three marketplaces, with prices standardised to US dollars. The mobile-only scope excluded laptops, tablets and wearables.
The detail behind the comparison
A price alone did not describe the item being compared. The brief also required condition or grading, storage, colour and SIM type. These details mattered because two listings for the same phone model might describe different versions or conditions.
How the work was structured
The assignment involved ongoing online price collection and delivery of data files. The revised brief specified 36 product variations. It also supplied a condition mapping across the three marketplaces so their different labels had an agreed reference point.
One comparison rule from the brief
The client specified the following condition labels for a shared comparison category.
| Marketplace | Listing label |
|---|---|
| Back Market | Fair |
| Amazon | Acceptable |
| eBay | Good |
This was the mapping for this assignment, rather than a general statement about marketplace grading.
What was delivered
Recurring price-data files formed part of an ongoing client relationship. By July 2026, the client had acknowledged the value of the data and the reliability of the work. The project provided a repeat source of pricing information for the client’s research.
What this project demonstrates
The work combined repeated collection with a detailed product brief. It required attention to which device variation was listed, how its condition was described and the currency used for the price.
A look inside the price-research workbook
This excerpt shows device specifications, country, marketplace, local prices and their US-dollar equivalents for the December 2024 period. Select the image to read it at full size.
Client identity and contact data are omitted from this case study.
