never heard of an albino bgk... there is on the other hand something called a white ghost labelled under the same latin name.. that could be the explanation.. (need I say that if this is what you mean they are the same fish? )
I did see an Albino black ghost knife once it was quite amazing but it was about £160 i think it was genuine though like one in so many thousand from the wild. I should have bought it if im honest but if you can get one, get one!
Not exactly sure but i did once see an pure white blk ghost. I also saw kind of a marbled one and was just wondering if that is common. What does a white ghost look like?