You can buy it on the Verizon Wireless site for $240 outright, or in 24 monthly installments for $10.
And no, this isn't a preorder. The phone seems to be available for for you to pick up, at least in New York.
Correction, May 25 at 6:20 a.m. PT: A previous version of this story indicated the phone was unlocked. That is not the case.