[jsiepkes]

The scammers probably live somewhere where it is "easy" to manufacture such a product (including packaging etc.). However getting access to someone who besides fluent English also "knows" western culture enough to use the right tone in the letter is apparently harder. As an example in an other comment I joked about a western company would never apologize for "our faulty security system".

So it's just a guess but with those two observations I would guess the scammers are from China.