It is said to be Neopan 400 under another name and yet Fuji haven't bothered to sell Neopan 400 in bulk rolls. So how did Neopan 400 get to be Legacy 400 and sold as bulk rolls and individual cassettes?

Digitaltruth is showing the 400 bulk roll as out of stock on its U.K. site but no such showing for Legacy 100 bulk roll nor any indication that the 100 and 400 cassettes are limited stock.

Neopan 400 seems to be part of the Fuji continuing range so if Legacy 400 is continuing in cassette form as rebadged Neopan 400, what has stopped sales of the bulk roll?