Last week, our family’s 20 year old electric hand mixer died. We can’t complain; it lasted a long time, and got a lot of use. But it did mean that it was time to go shopping. Now, we do a lot of research on many of the products we buy; a cheap hand mixer, however, did not feel like it merited that kind of research. I just headed to Walmart, expecting to grab one and go. I was surprised by two things in this shopping trip: both a larger selection than I expected, and a narrower choice of countries of...