No paycheck for 3-12 months with 'tiny' spiffs to meet goals along the way. You sell advertising spaces into a magazine and once you hit a certain quota you finally get a commission on a percentage of any advertising you sell above it.
The issue is how long it takes you to get to the quota and they don't pay you in the meantime. So it's only feasible to do if you got enough money in the bank to handle such a long time with no pay.