Haha yeah. There's tons of people who s3ll them. Such as myself. You pretty much have 3 options:
1- create a viral page/ask friends to invite their friends. (good luck with this one! lol)
2- purchase invites.
3- create a huge network of accounts & friends, and send them all to the page. (If you have all the time in the world, this would be a good option)
I have a friend base of 6k, and I will tell you, it takes QUITE some time to reach this number, If you're trying to find a quality stock of friends. I keep only good quality friends, because I deal invites; I want to make sure that the people who buy them aren't upset about having a million different versions of muhammad ali xadrequr as fans, that can't speak english. Typically, 3rd world country profiles are frowned upon when it comes to the invite service. American/UK/Canadian/Australian are the ones people want. So it ALL depends on how you feel- Time, Money, or Luck?