Is MotorCraft GL-5 Gear oil THAT expensive ?

I am not from the US, and I saw some ads for Motorcraft 75W-140 in my country for a very cheap price. I checked R.A and it is so expensive ! The Lucas is only like 11 bucks.
Which leads me to think the Motorcraft sold in my country must be fakes.

So for you Americans, is this a normal price for Motorcraft GL-5 syn oil? Heck even the Mobil 1 is cheaper.