Lots of people are motivated by money. The moment they see the $$$ signs, they start chasing whatever can get them that, the easiest, fastest way possible. Unfortunately, bad players can start to exploit that kind of stuff.
What I can say is that in many parts of the world, that $1 could mean a lot. Could be the price of a decent meal or two.
When I was in college, when I still lived in my home country, $1 was more than enough to buy me a full lunch. ;)
RE: $1 comment upvotes for everyone