Currency conversion is done with Amazon Currency Converter.
It's from the lightning deal on Amazon.
It hasn't started yet for non-prime users (Starts on 00:30), looking at how fast it is going, 128GB one might run out before it starts for non-prime users.
Apparently, according to Amazon review, it is identical to Turbo other than the design, but I am not sure how much of that is correct.
EDIT: 128GB ran out before 00:30
Ends at 4AM
128gb is out of stock already :(