Amazon has the MSI Ventus GeForce RTX 3080 10GB Graphics Card for $880 with free shipping. Features 320-bit memory interface, Nvidia Ampere architecture, 1740MHz boost clock, 3 cooling fans, 1 HDMI 2.1 port; 3 displayPort 1.4a ports.
Has good Amazon Reviews.
Amazon has the Corsair SF Series SF750 750W 80+ Platinum Certified Modular Power Supply (CP-9020186-NA) for $150 with free shipping. Features 750 continuous watts In SFX form, Flexible Para cord sleeved cables, fan bearing technology: rifle bearing.