Mean Well LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router

The Astrons are wonderful. I have one. I love it. But they're $300-ish. https://www.amazon.com/MEAN-WELL-LRS-350-12-Computer-Project/dp/B07VTLJS18/ is probably the cheapest reputable choice. They don't look super-finished and the hookup wiring isn't necessarily for the faint of heart. Don't spill a drink into one. I ran one of these for several years until I upgraded to the Astron - https://www.amazon.com/Universal-Compact-Bench-Power-Supply/dp/B000NPT4TK/