Here's another 4 bay case I just ran into.

This is just a four bay case. For a bit more you can get the eight bay norco I built mine from, if you don't mind the noise. This is not my video but it's a good video about this case. This one definitely looks nicer than the four bay norco because of the removable motherboard tray and more room for the cpu. It's been out for a while, but I hadn't seen it myself. And if you don't even want to built anything, you can also check out the hp microserver Gen10 I posted before.

https://www.in-win.com/en/ipc-server/ms04
Here's a build with pictures of this case.
http://proclockers.com/reviews/computer-cases/in-win-iw-ms04-mini-server-case-review?nopaging=1