Select current, documented store tiers in several currencies and create cards showing the exact local charge, tax treatment, and reference euro amount where lawful and useful. Ask native readers to classify each card as clear, ambiguous, unexpectedly low, unexpectedly high, or impossible to judge, then explain only the punctuation or pricing cue involved.
The hypothesis is that direct conversion and store-standard tiers will produce different clarity patterns across currencies. Translation, tax, purchasing power, and price psychology are separate variables, so the protocol records them separately and never asks one speaker to represent an entire country with a heroic shrug.
A report should date every price source, identify the store and territory, reproduce the cards and questions, and publish uncertainty alongside anonymous classifications. The test may improve transparency; it cannot make different incomes equivalent or prove a universal emotional meaning for .99.
Exchange rates convert money, not context.Read the pricing notes