I host three sites on Linode, lowest plan at $20/mo. They're excellent, as just about everyone can tell you. It's a full install of a Linux distro of your choosing, any software you want. It's as good as having a Linux machine sitting in your office.
However, $20/mo might not be the lowest price you can find for two low-traffic sites.
edit - I should point out, I host three low traffic sites on one low-end Linode instance, so that' $20/mo flat for three sites. I also use it for compiling code (I can compile code anywhere from my phone!) and testing out new features for various bits of software, so it has more use than just hosting.
I use Linode for several low-traffic sites as well, and I'd recommend them.
However, there's one crucial aspect in which they're different than having a Linux machine sitting in your office (which I also have): for $100 I can put a 2TB drive in the local server. The equivalent space at Linode would cost $1000 a year.
If you have lots of data, Linode probably isn't a good fit. I'd look into Amazon S3 (which I suppose you could use with Linode hosting in front of it, but I'd probably just use AWS if I were relying heavily on S3).
Despite my post, I'm more into server administration than I am programming. Might be why I love Linode. I've helped a couple people set up their Linode sites, and tie it into S3 (and other services) for various uses. The thing I love most about Linode is that it's anything you want it to be.
However, $20/mo might not be the lowest price you can find for two low-traffic sites.
edit - I should point out, I host three low traffic sites on one low-end Linode instance, so that' $20/mo flat for three sites. I also use it for compiling code (I can compile code anywhere from my phone!) and testing out new features for various bits of software, so it has more use than just hosting.