I could start off with a list of reasons that someone might have for hiring a hitman but, I'll bypass that list and go straight to the "trend." Supposedly, you can hire a professional killer to off your enemy "in 10 days or less."
How do find such a person? You go to the internet, of course.
Craigslist apparently, where there are millions of listings and visitors. Seems that Mexican assassins are listing their services for sale - as low as $6,000.