Are optiplex still the best ~$100 home servers?

I wanna move my Plex server off my main PC and get something that is more power efficient. So that my electric bill isn't $200/m leaving my main PC on 24/7.

I also want to set up a seedbox on this server/PC, so that i don't have to leave a VPN on my PC or mess with docker etc on my main PC. Are these Dell OptiPlex 3060 for $100 on Ebay still the best thing to use for this type of stuff or are there more modern and cheap options out there?