It's ART of Making MONEY.!! Click following link to read my blog post.
"Art of Making Money - Philately Greed"
Now think that if they can print any stamps with perforation they can print IMPERF stamp and than make a error in cutting.
Following is IMPERF stamp of 2008 Gandhi from India and not sure whether it's was available to general public or not.!! I don't it was available to general public otherwise it will be not that expensive.!!!
Either it's stolen from printing waste or forgery.!! and this kind of IMPERF stamp can be made in to error stamp.!!!
Also look at the currently available Gandhi ERROR stamps and think is this really make sense to pay very high price.!!!