How do people obtain Facebook ad coupons and sell them at a cheap price?

[yeng]

I often see people (both as individuals and businesses) sell their Facebook coupons (usually $50) for very cheap prices (at least $4). How are they able to do it and still get profit?

In the first place, why are Facebook ad coupons given by Facebook to a huge amount that people just resell it?

[john]

Hi Yeng,
I can answer your question, there ares some sites that giveaway free coupons (Facebook,Google...) once you sign with them. Or they organize some kind of Sweepstake and the winner gets it.
Once they got it for free they just resell it.
Hope I helped :/