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The shop wanted to estimate trade-in value beside each new iPhone. Customers could then see how their old device affects the purchase price.

Supported devices had to come from the product catalogue. Inconsistent names and variants needed processing without delaying the form when opened.

We developed a responsive dialogue for selecting a device and its condition. Product data is prepared separately and refreshed daily.

The calculation connects with the product being viewed. Administrators do not need to maintain a second phone catalogue specifically for the form.