Just the opposite will be the case, in fact. The .40 isn't in as high of production numbers, and for the most part it's only found in the U.S.
The 9mm parabellum/9x19mm round is the NATO standard, and as such is used in guns worldwide, and is therefore available in massive quantities, worldwide, at low prices.
This is one of the reasons, along with mag capacity, that the 9mm is so popular.
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