One popular hobby is model railroading. The vast majority of model trains and accessories are now made in China. A recent advertisement in a model train magazine is worth your attention.
This advertisement is from a company called GarGraves who claim to be able to undercut their competitors' prices by more than 75%, even though GarGraves manufactures their products in the U.S. and their competitors manufacture their products in China.
Well, how do you think GarGraves could do this?