amazon.com has the Apple Mac mini M1 8-Core CPU / 8-Core GPU / 256GB Desktop for $499.99 with free shipping.

* Apple M1 8-Core CPU / 8-Core GPU, 8GB RAM, 256GB SSD, 802.11ax (Wi-Fi 6), BT 5.0, 2 x Thunderbolt 3, 1 x HDMI 2.0 macOS 11.0