From $500 to $6.2 million

These guys took $500 and with no outside investment produced threadless. Threadless sold $6.2 million in merchandise last year and has quadrupled in size each year for the last 4 years.

These guys are just selling T-Shirts. They must be doing it really well.

Threadless T-Shirts - Designer Clothing Submissions - Tees, Tshirts and T shirts!