Complete waste of time, money and effort. Seriously it doesn't matter.
Facebook only works succesfully if the people that like your page are a customer, want to be a customer, like what you do and want to keep up to date with you or want to share it with friends. It's simple as that really
You could have 5,000 likes from 'real people' but if they have barely any friends and aren't very active it's totally pointless.
You would also be surprised how easy it easy to set this up as an automated system that creates loads of people, sends our friend requests to try look real then like your page.