Via PC Gamer, the G5 Gaming Desktop is on sale for $813.99. It comes packed with a Nvidia GeForce GTX 1660, 6-core/12-thread Intel Core i5-9400 processor, a 360W PSU, 8GB of DDR4 RAM, a 1TB 7200 RPM hard drive, a Qualcomm SW1810 Wi-Fi and Bluetooth 4.2 wireless card.
Those are decent specifications for the price, but you can switch around the parts to better suit your needs. For example, replacing the 1TB hard drive with a faster 256GB MVMe SSD only costs $50 more, and you can choose to add more RAM or a better graphics card.
You can check out the PC for yourself here.