Depending upon the purity, quantity and where you live, Cocaine prices can vary. A kilo of cocaine can cost any where from twelve to thirty five thousand dollars. Street Dealers usually cut their cocaine with various chemicals to increase the amount of money they can can make. A gram of cocaine can go anywhere from $20-$100 dollars per gram. To show the difference in where you buy cocaine can effect the cost, a gram of cocaine in Columbia is around $2.00. However, in New Zealand, a gram of cocaine can cost up to $715.00 dollars. Price changes exist within national borders and are usually based off the level of danger of selling cocaine in that area and amount readily available on the street.