AMD RYZEN 7 1800X 8-Core 3.6 GHz (4.0 GHz Turbo) Processor, ASUS PRIME X370-A AMD Ryzen AM4 DDR4 HDMI DVI VGA M.2 USB 3.1 ATX X370 Motherboard, CORSAIR Vengeance LPX 16GB (2 x 8GB) DDR4 3000 Memory (total combo package - $670). They are near top line system.
https://www.newegg.com/Product/ComboBundleDetails.aspx?ItemList=Combo.3557122
https://www.newegg.com/Product/ComboBundleDetails.aspx?ItemList=Combo.3557122