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Product · UXJun 2026 · Wise × HuddleHive Women in Tech hackathon · Team of 5

feeShield

The price at the checkout is not the price.

A Chrome extension that shows the true landed cost of an international order, with duty, VAT and handling fees, on the checkout page before you pay. I came up with the idea for the Wise × HuddleHive hackathon’s transparency challenge and co-designed the UX.

checkout · feeShield active
A checkout page with the feeShield panel open: “Hidden costs have been detected”, total 201.60 GBP for a £180 cart, import duty 12% adding 21.60 GBP.
On a test checkout: £180 plus 12% duty shows as £201.60.
RoleIdea and UX co-design
TeamTeam of 5
WhenJune 2026, one weekend
Built withChrome extension, JavaScript
01

Skills it shows

Product thinking

Turned the hackathon’s transparency challenge into one job: show the real cost at the moment of the decision.

UX and interface design

The alert leads with the landed total, breaks it into four lines and marks every figure “Est.”, with detail behind View More.

Teamwork

The idea was mine; the team took it up because they had been hit by the same charges. I co-designed the UX with our other designer, from open brief to working demo.

Rapid prototyping

A working extension and a live demo inside one weekend.

02

Problem, build, result

1Problem

Order from abroad and the duty, import VAT and courier handling fee turn up weeks later, at the door. The checkout never showed them.

2What we built

An extension that reads the price from the page, checks the UK’s £135 threshold, adds estimated duty, 20% import VAT on top and courier handling, and shows the landed total before you pay.

3Result

A working extension, demoed live on a real US retailer’s checkout inside one weekend.

£197.47landed total of a $181 order
£59.47duty, VAT and handling hidden
5people on the team
1 weekendfrom brief to live demo
03

In pictures

Select any image to see it larger.

Before: the checkout says tax is £0.
The live demo on a real US retailer: £197.47 landed, not $181.
04

Tech stack

Tools and data
JavaScriptChrome extensionHTMLCSSUK import duty and VAT rulesHS commodity codes
Methods
Just-in-time informationProgressive disclosureUser-centred design