There's a used games store here in town and they have awesome customer service. I recently went in, and asked about the price of an Xbox 360 power cord and a 20GB hard drive, and mentioned my $50 limit. Altogether, the normal price world have been about $65, but he dropped it to $50 because he wanted to get my sale, which was really nice.
Third time's a charm, perhaps I can pull it off again with a new Xbox. c: