Again it will likley be imported from countries with lower labor costs.

You need something perishable, and of low enough cost that importing is unlikley.

Bread would be a good option but has the issue that it's not as common in Japan as France, it also varies wildley where as a big mac is generally consistent.

A Big Mac, as a branded item, varies by cultural context: in the US, it's super cheap fast food; in Europe it might be late-night after-party food; in Asia, an extravagant treat.