The service flow should preserve evidence at every handoff
Discovery, purchase, warehouse receiving, consolidation and international shipping should not become isolated screens. Keep the source URL, item identifiers, costs and status visible as the order moves so support staff and buyers can trace why a price or shipping decision changed.

What should become final at each stage
Before purchase, item identity and seller terms should be final while international shipping remains an estimate. After Japan-side delivery, the warehouse can confirm what actually arrived. After packing, weight and dimensions become usable for carrier comparison. A service that marks those transitions clearly lets the buyer distinguish settled charges from planning numbers.
The order record should remain auditable
Keep the source URL, Japanese title, seller or store, authorized price, purchase timestamp, warehouse receipt and outbound parcel together. That record is useful when a listing disappears, a translation is disputed or a later support request needs to reconstruct what was actually ordered.
What the interface should make explicit
For how shopping works, the service should show which facts come from the Japanese source, which amounts are estimates, which stage is waiting on a seller or warehouse, and what action the buyer can still change. On How Japan Proxy Shopping Works, that separation tells the buyer whether the unresolved issue is source evidence, money, timing or the physical shipment, instead of hiding all four behind one generic status.
Example order from listing to delivery
A buyer finds a used Seiko on Mercari. Proxy Japan should save the exact seller listing and authorized price, place the Japan-side order, track seller dispatch, record warehouse receipt, let the buyer choose any needed photo or consolidation step, and only then quote the packed US parcel. Each transition should preserve the previous evidence instead of replacing it with a generic “processing” status.
The key design rule
Never make a later stage look more certain than the evidence allows. Before warehouse receipt, international size is an estimate; before purchase, stock can disappear; before the seller ships, domestic timing can change. Status and price labels should reflect that reality.