Markets in everything?

I cannot verify this one, but it popped up in this week's News of the Weird:

China Daily reported in May that businessman Hu Xilm, who claims that a housefly in food 10 years ago ruined a big business deal for him, has since spent thousands of dollars on an obsession to eliminate as many flies as he can; with help from a team of volunteers he recruited, he claims to have killed 8 million.

My question: What does it cost to kill eight million flies? [And should it be a labor-intensive activity? Should it in fact be outsourced to China? Were the "volunteers" acting out of charitable motives?] If I knew the true cost, I would hold a lottery among MR readers, with a big prize for the winner.