Why Coke Cost A Nickel For 70 Years : Planet Money : NPR: In 1899, two lawyers paid a visit to the president of Coca-Cola. At the time, Coke was sold at soda fountains. But the lawyers were interested in this new idea: selling drinks in bottles. The lawyers wanted to buy the bottling rights for Coca-Cola.
The president of Coca-Cola didn't think much of the whole bottle thing. So he made a deal with the lawyers: He'd let them sell Coke in bottles, and he'd sell them the syrup to do it. According to the terms of the deal, the lawyers would be able to buy the syrup at a fixed price. Forever.
Andrew Young, an economist at West Virginia University, says the president of Coke may have signed the contract just to get the guys out of his office.