You can get it from Amazon Japan very easily (it's where I got mine).
Are you sure? It says 255 here for the Japanese one.
I have the english one and it's the same amount of pages.
Worth mentioning if anyone is looking for a copy: http://www.amazon.co.jp/Bloodborne-Official-Artworks-%E9%9B%BB%E6%92%83%E6%94%BB%E7%95%A5%E6%9C%AC%E7%B7%A8%E9%9B%86%E9%83%A8/dp/4048657984/ref=sr_1_1?s=books&ie=UTF8&qid=1457022249&sr=1-1&keywords=Bloodborne+Official+Artworks
It's out of stock, but since it's amazon, they'll almost certainly get more soon! (I totally forgot about it and just ordered mine!)
most official retailers are out of stock, but you can still pick one up on amazon, albeit slightly overpriced: https://www.amazon.com/Bloodborne-Official-Artworks-design-Japanese/dp/4048657984
It's the same as https://www.amazon.co.jp/gp/product/4048657984/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 right? Just in English...?
U register a new account from amazon Japan and order it....note it is separate from your Amazon US/UK account... http://www.amazon.co.jp/gp/product/4048657984/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Only available in Japan at the moment I think. http://www.amazon.co.jp/dp/4048657984/