When I wrote about my $80 pajamas, I never imagined it'd spark a three-part series of articles. Yet here we are. On Monday, I wrote about why I chose to buy high-quality pajamas. (I've been wearing them all week, by the way. They're awesome.) On Wednesday, I published a follow-up piece that explored the “buy it for life” philosophy, and explained why sometimes it makes sense to shop based on quality instead of price. Today, I want to spend a little time exploring the ethical implications of buying expensive items. Quality tends to come with a price.