The hardware requirements you list are incorrect/incomplete. With an Oculus Rift, the minimum GPU is a GTX 1050 Ti or 960 from Nvidia, or an RX 470 from AMD. This also makes your claim of a $1000 even more wrong than it already was. There is currently a bundle deal at Best Buy of an Oculus Rift AND a VR-capable PC for $999:
In addition, you make it sound like the Vive and Rift get software from separate stores. That isn't the case; the Rift can run Steam games directly, while the Vive can run Oculus store games via the Revive tool.