While even dumb victims are victims, I really have trouble defining what is being done as scam.
You can see in plain sight what you're getting offered. It's not even fine print. It's like the headline of the "contract" you're signing.
A popular scam on IRC goes like this
guy comes online, advertising he wants to trade the whooppee cap
advertises for about, 15 mins
Then another guy comes online saying he wants to trade an unusual hat for the whooppee cap
You talk to the new guy, try to get the 1st guys whoppee cap and are willing to make a very generous trade because of what you can get out of it. All the while, trying to keep the guy with the unusual on hold.
You get the whooppee cap, but the 2nd guy fucks off cuz it was the same guy scamming you