Got a 5105 box from Ali (think one of the one that was also shown on servethehome or maybe slightly different)… 4x 2.5 g ports…
Put 8 gigs into it and an older ssd… Works great… Although it does get (too) hot… a simple fan blowing over the top of the box seems to do the trick so no fancy mods needed… I’ll get a suitable fan from Ali I thin and should be done for 10-15 euros. But all in all very solid build. Doesn’t look cheap at all with a full metal casing. The mainboard looks tidy as well… I’ll probably repaste the cpu soon.
The one I got was about 170 euros including free shipping. Barebone that is. Got it a couple of weeks/month back. Was on my doorstep in about 2 weeks.
Got pfsense+ running on it.