Reason for higher chances of forgery is because it's very easy to forged. You don't need to worry about perforation and it can be easily printed or photocopied by any high quality printer with high resolution images or even by cutting perforation and recopying it.
Imagination is power.!! I think Einstein said it right and everyone in Gandhi Stamp collection needs to use this before purchasing any stamp or philatelic material so you will never regret of being cheated.!!
And you all know what's going in Gandhi stamps.!!
So beware other wise you will get some kind of color copy instead of imperf stamps.
Gandhi Stamps Club.