Thought he was gonna get it worse than that. skin, blood, organ, reproductive genes, hair, finger nails and all that jazz. Like they'd want to know the whole body to see if it is structured the same. Shit his bones could be different
Not even the equivalent of 3 million US$ is actually not much for completly unknown DNA patterns :x (Aside from the point that you cant really translate the money worth, but thats another point)
But the Manga/Novel isnt good with money anyway... all over the place