Fly is mostly (to my knowledge) reselling Netactuate and OVH servers, their main innovation is the developer experience on top, using Docker on a MicroVM based approach. Of course not only that, but I think it’s their main differentiator.
Haven’t used that in a while but Scaleway offered ridiculously cheap dedicated ARM hardware close to these price points, not sure if they still do.
(Not saying the typical cheap VPS on LowEndTalk has comparable PaaS features. Only responding to parent’s use case of a single cheap instance.)
You can easily get 4 GB of RAM for $5 from the likes of Hetzner or Hostinger, so that's 16x more RAM for 2.5x the price. One relatively unknown provider I have used in the past offers 2 GB of RAM for €3.6/month (if paid monthly, €3 if anually), so 8x more RAM for 1.5-2x the price. I'm sure I could find something even cheaper, but I'm just looking at providers I have personally used.
BTW that dropdown seems to be sorted cheapest > most expensive. If you go to the bottom of the list the price for that same VPS doubles.
There's definitely places that offer it... also 512m
I know because I've personally bought such plans and that was $5-10/yr because I didn't need dedicated ipv4.
One of my VMs had an uptime of more than 1050 days before the infrastructure rebooted it, so in terms of availability they've certainly surprised me.
The only downside I've come across with Oracle Free is that the 'best' regions are typically full. I ended up provisioning my free VMs in another region/country and it works fine.
I suppose another downside (if you want to view it this way) is they will delete idle unused free VMs after a certain time period. You have to add a credit card to your account to "upgrade" your account and run free resource indefinitely. While you're not charged for anything, it makes me nervous forking over a CC number to Oracle.
Just get a $5/mo VPS instead if you're really concerned about a few dollars a month.
The perverse irony is that the most common reason cited by cloud providers for not letting people set a hard cap on charges is an insistence that surely the last thing you want in the world is for your service to be taken offline, even if it does means avoiding a $1k–$100k bill at the end of the month.
if you are going to haggle over $2/month then you are better off just connecting your raspberry pi with wireguard/cloudflare tunnel on a residential connection
*Note this is for an instance with only 256MB RAM (https://fly.io/docs/about/pricing/), but it's definitely possible to run non-trivial projects on that. Rust-based web servers like Rocket require only about 10MB RAM. Basic PHP servers should also fit from what I can find.