You can also check out the used market. I mostly buy mechanical watches from the 60s through the 80s, you can often find cool vintage stuff with some patina for $20-60, including shipping. Check out the WatchUSeek forums, or the WatchRecon app on Android. Many sellers are in Europe, too.

If you want a new watch, I'd start looking at Seiko, Citizen, and Seagull watches in your price range.