[radicality]

Damn, that sounds nice, the fiber in Switzerland linked to in other comment.

Though the small cost is probably overshadowed by the large infra costs at home. So now you need a 25Gbp/s router, together with the rest of topology like qsfp+ switches, and then actually computers with >= 25Gb/s nics to make use of it. And then all the appropriate cooling for it. It’s starting to sound a lot like a home data center :P

[navaati]

You can get 25G switches/router for not much nowadays, check Mikrotik. Throw a couple Intel NICs from ebay in your machines' PCIe ports and really it's not that much of a deal.