The Global Pricing Corridor Setter

Help me set a coherent set of international prices that limits grey-market
arbitrage.

The product: [DESCRIBE]
The markets and what I know about each: [INCOME, COMPETITION, COSTS]
Current pricing: [DESCRIBE]

Provide:
1. A price "corridor" — the range across markets wide enough to reflect
   local conditions but narrow enough to deter arbitrage
2. Where big price gaps would invite grey-market reimportation
3. How landed cost, tariffs, and currency should shape each market's price
4. How to defend price differences that are justified
5. A recommended set of prices with the logic

Balance capturing local willingness-to-pay against the arbitrage risk of
large gaps. Flag tariff/tax and FX inputs to verify currently.