Buying "climate friendly" products is actually more complicated than that. In many cases, local products worsen global warming MORE than imported ones. For instance, in Denmark, it's better to buy Spanish tomatoes than Danish. The reason is that Danish (and other Northern European) tomatoes are grown in greenhouses which are heated most of the year. Obviously, this requires a lot of energy, so buying tomatoes transported from Spain on a truck is actually better for the climate. The same is true for cucumbers, peppers etc.