Selling something but not saying what it is and implying it might be worth the price. A way to sell something for more than it’s worth. A good of example would be doing a blind buy for a song that nobody really wants for $5k, when the most you would get for that song if it wasn't blind is $2k.
Why would people fall for this?
1. A drought of music and they'll settle for anything
2. Gambling "what if it's the song I want"
3. Retardation
"Oh boy I hope they're selling the song I want in this Blind Group Buy, I'll donate $100 and keep my fingers crossed."