Case study · Tech accessories · International

A bundle builder, and a 'sold out' bug that wasn't

Elyzium sells glow-in-the-dark phone and AirPods cases. I built a bundle builder with tiered discounts, and traced why every product showed as sold out for visitors from one country.

Visit the live store Get a free audit

elyziumstore.com

The challenge

Where the store was stuck.

01
Customers in one country saw every product as 'Unavailable', while other countries could buy normally.
02
Stock was assigned to a fulfilment app's location instead of the store's own location.
03
The brand wanted customers to build their own bundle with a visible saving.

What I built

The work, piece by piece.

01
Root cause: shipping zones
The country wasn't in any shipping zone, so Shopify blocked add-to-cart entirely. Added it to the international zone and confirmed by testing add-to-cart per market.
02
Inventory location fix
Activated stock at the store's own location as well as the fulfilment app's location.
03
Bundle builder
Customers pick their items, see the before and after price on the button, and add everything in one go.
04
Tiered discounts
2 items 10% off, 3 items 15% off, verified in a real checkout.

Outcome

Where it landed.

Add-to-cart working again for the affected country.
Bundle builder and tiered discounts live and verified in checkout.

Proof

A bundle builder, and a 'sold out' bug that wasn't

Where the store was stuck.

The work, piece by piece.

Root cause: shipping zones

Inventory location fix

Bundle builder

Tiered discounts

Where it landed.

More case studies.

Raising order value across 4 Shopify stores

A premium fragrance store, page by page

One product card, everywhere, with the right size

Get a free audit of your store.