This is where I'm at. I'm selling off some old DDR3 RAM I have and I'm hanging onto my DDR4 stuff and systems.

Just bought a 3700X to replace an aging Ryzen 1700X. $100 on eBay, so not bad.

For your 5800X if it does die(*knock on wood) then at least you can snag a 5700X or 5800X on eBay for $200. Hopefully that stays consistent.