Diet Coke
Diet Coke does not use a modified form of the Coca-Cola recipe, but instead an entirely different formula. The controversial New Coke, introduced in 1985, used a version of the Diet Coke recipe that contained high fructose corn syrup and had a slightly different balance of ingredients. In 2004, Coca-Cola introduced Coca-Cola C2, which it claims tastes much closer to Coca-Cola but contains half the carbohydrates. In 2005, the company introduced Coca-Cola Zero (replaced by "Coca-Cola Zero Sugar" in 2017), a sugar-free variation of regular Coca-Cola.
Coca-Cola
In November 2009, due to a dispute over wholesale prices of Coca-Cola products, Costco stopped restocking its shelves with Coke and Diet Coke for two months; a separate pouring rights deal in 2013 saw Coke products removed from Costco food courts in favor of Pepsi. Some Costco locations (such as the ones in Tucson, Arizona) additionally sell imported Coca-Cola from Mexico with cane sugar instead of corn syrup from separate distributors. Coca-Cola introduced the 7.5-ounce mini-can in 2009, and on September 22, 2011, the company announced price reductions, asking retailers to sell eight-packs for $2.99. That same day, Coca-Cola announced the 12.5-ounce bottle, to sell for 89 cents. A 16-ounce bottle has sold well at 99 cents since being re-introduced, but the price was going up to $1.19.