There's a promo code 'chiaching' which makes it come out to $234.99 each. They aren't new but still it's manufacture recerts which people get when they have to RMA a new drive from Seagate. So a bit better than a used drive. Also, it looks like there's no sales tax to pay so by itself that's a good deal I'd say.
Seagate Exos 16TB ST16000NM001G
Seagate Exos 16TB ST16000NM001G