a kilo of cocaine that cost the mexicans twenty-five hundred to three-thousand dollars in colombia would fetch twenty-five thousand a kilo wholesale across the u.s. border , and that was usually significantly cut with buffering agents in order to dilute the nearly pure cocaine , thereby increasing the apparent quantity once repackaged for the states ; so in actuality it was more like an effective thirty to thirty-five thousand sale price for that original kilo by the end of the day .