Since the cost does not include enough space for a full node how much does it cost to go to 1TB for storage?
It's not much work to do a quick pre-install of BTC and then bill you at a profit for bandwidth overages and storage overages.
Remember, most if not all hosts give you X bandwidth and even if you are doing your initial sync from a local node to your local node and never touching the internet that bandwidth still counts against your monthly total.
While your statement generally is true, it seems Contabo also offer storage-focused option. But with very low price, i would question the reliability and actual performance of such VPS.

It's also worth to mention there are at least 281 reachable full node which use Contabo, according to
https://bitnodes.io/nodes/asns/?q=51167. Using less popular datacenter would be somewhat better.
It's quite difficult to find ASNs less populated than that. IPs under the same ASNs doesn't mean that they are under the same datacenters; they can also be among a bunch of different datacenters that are geographically located in different locations.
You're right. But IIRC we can't find better or more accurate data without much more effort.
2 cores of what CPU? 3GB ram is a bit light but doable.
For under $70 a year it's not bad. If there is some sort of price guaranty. Do you want to be moving in 6 months because it's now $9.99 / month?
Have dealt with that a few times over the years.
Also, does that come with a dedicated public IP or are you behind a NAT?
If you are only going to be on TOR for the node it's not a big deal, if you want public access it's a different story.
Yeah, I can go dig around the site but I'm on mobile at the moment.
-Dave