Is there an easy way to estimate, to the nearest 100 g (or so) the weight of a shopping cart in Bricklink so that I can estimate the shipping charge (sellers may quote ranges such as "250 - 500 g: $X, 500 - 1000 g: $Y" so I wish to stay in a cheaper band if possible)?
I can find out the weight of a type of brick (such as this) but summing by hand is a chore. Just wondering as it already has all the necessary info...