if he won't get more bud or your money back, kick his fucking ass. he just got you for a good chunk of change. then he's lived and learned. once i was driving like a half hour to pick up from a guy that i'd just met and he called me when i was like half way there saying that he was where i was meeting him but he had to go up on the price (which was originally higher than i normally pay anyways). he was insistant on it, so i told him to fuck off and i turned around and went back home.