I'm continually stupefied by how willing so many HN commenters are to publically advertise their ignorance by giving useless advice to actual experts.
There is an assumption that if there's nothing really visible made by one person it means they don't know what they are talking about. So, background: I'm a linux sysadmin at a very large internet company, and has been running hobby and small business sites for 20 years parallel to this. About a decade ago I wrote cache plugins for WordPress and run a lot of tests of 128MB VPS machines to see when they break. The traffic from neverssl.com really should be fine on a Raspberry Pi 4, because the whole app, including the temporary redirect db needed would easily fit in memory. The OS can be read-only, so the SD card wouldn't wear out either, and the Pi 4 has a Gbit link. But as it's been pointed out, the internet uplink could indeed be a problem, so instead of that, there's Hetzner: 33€/m gets you unlimited traffic, 2GB RAM, 320GB HDD. That's 400€/year, and that's all the cost. Note: Rpi4 has 1-4GB RAM.
Next time please consider that people may actually know what they are talking about even if they don't have their name attached to an "internet scale" service.