The only reason that I am not overawed by the depth of knowledge and sound advice in Code Complete, Second Edition (Steve McConnell, ISBN: 0-7356-1967-0) is that I bought the second edition because the first edition was so good.
In MontrÃ©al for Extreme Markup 2007, I went to MarchÃ© Atwater to buy some maple syrup. When I wanted to know the weight of a pack of 8 cans of syrup, the syrup seller took me and the 8-pack next door to the fishmongers, and the fishmonger put the cans on her scale. She even set the price to $2.20/kg so I could see the weight in pounds if I’d wanted.
Since it was at that point I agreed to make the purchase, I’d say I did buy the maple syrup in the fishmongers.