They are in a separate category called Serverbörse [1]. The cheapest currently available is for 28€ a i7-3770 with 16GB RAM and 2x3TB spinning rust.

[1] https://www.hetzner.com/sb

If the cheapest is $25/month, I think it would just make sense to get a used school/office PC. I was able to pick up a used Haswell i5, 8GB of memory PC for $200, which you would probably get better performance out of, and break even at ~8 month mark. That being said, pandemic prices might shift those numbers.

Nothing wrong with getting a used pc, but do you have 1gb uplink at home?

In the cheapest offers right now, there's a Intel Core i7-4770, 2x 2 TB Ent. HDD (spinning rust, not ssd) with 32 GB ram. And a xeon box with ecc ram (same, low price).

Also, even if you do have a 1 Gbps uplink, a lot of providers will throttle you if they suspect you're actually hosting a server that tries to utilize most of that bandwidth in anything but bursts.

For example, 1TB monthly is really only 10mbs...common quota for hosted servers.

I can see few options for 23.53 EUR right there

Either way, it's auction page, may not always have the deals you're looking for in this price range

When someone cancels their old server and they recycle it into the auction system