You can pre-order them at that price.
The iPhone SE is the least expensive of Apple’s glass rectangles at $400. But Walmart has a sale on them anyway; literally $200 off.
Or rather, had. They almost instantly sold out of them in all available colors (White, Black, and Red). This deal pertained not only to the 64GB models, but also the 128GB and 256GB models as well.
Luckily, you can still get them for that price via pre-order. So if you’re invested in their ecosystem, it’s a pretty good deal.
Source: MSN