The 5800X3D shows in stock on the AMD Store, albeit at MSRP. It's getting difficult to find elsewhere.
https://shop-us-en.amd.com/amd-ryzen-7-5800x3d-desktop-processor/
The 5700X3D seems to be readily available however.
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT