I'm not saying that others shouldn't buy from him. If they really want that external expander to be an option post-upgrade, he does have the best prices, and ships quickly. But, when you can get the same drives on sale from Newegg, don't care about the external expander, and have the know-how to DIY, his profit can be more than the price of the drive, and your wallet that much lighter. There will always be a need for drop-in-and-go drives, and a semi-DIY way. It took me quite a while to learn the Linux basics, for doing things the tools couldn't do within guided menus. Even good-old WinMFS needs additional know-how, beyond what is provided with/by it, to upgrade to 2TB, especially on the S3 OLED.