With this budget and knowing little or nothing about cameras, there aren't a lot of choices. An Olympus XA has auto exposure with manually set ISO speed, a good lens and an easy to use rangefinder, but unless you're very lucky, a decent one will cost more than your budget. So will most other rangefinder cameras that aren't fully manual.
If you buy a fully manual camera, you're in for a steep learning curve -- that is, you'll have a lot to learn before you start making more good images than bad (even counting only exposure and focus).
If you're willing to consider scale focus (estimate or measure distance to your subject, then set that distance on a scale) as well as manual exposure (with a very good "hint" system on the actual controls), you might consider a Smena 8M -- these are very inexpensive Soviet 35 mm camera with a decent triplet lens, and one in good condition should still be well inside your budget.