I just bought a refurbished Lenovo k14 with 32gb of ram and Corei7-1165G7 with 500gb for 350$ which I'll use as my 2nd home server.

My first home server is a 2nd hand gaming PC that I bought for 500$ with 32gb and 7700rx video card that I use for GPU based tasks but it's quite audible when it's working so wife and I agreed it has no place in the living room anymore and is being deported to the corner of my office.

You can still find really good bargains for home servers from refurbished good computers, and given how well solved tech reliability is now, it's really not worth buying new.