No, it's because there are new, low-end PCs that can be bought. There's no low-end Mac, so it means that people who don't want a Mac but don't want to spend as

No, it's because there are new, low-end PCs that can be bought. There's no low-end Mac, so it means that people who don't want a Mac but don't want to spend as much buy used Macs. If Apple sold a $400 Mac, you wouldn't be able to give away a 3-year-old Mac either.