And when they finished, we took it, we put it under the table, and we said, "" Would you like to build another one, this time for $2.70? "" If they said yes, we gave them another one, and when they finished, we asked them, "" Do you want to build another one? "" for $2.40, $2.10, and so on, until at some point people said, "No more. It's not worth it for me."