I have a bunch of Chieftec and Antec cases from newegg refurb section, three aluminum, some with and some without PSU, all between $30 and $50. Now get this -- if this is the only case you'll get, you are gambling because some are damaged, some missing rails, some have broken standoffs on the front cover, some have other physical defects. Some are just perfect, no problem at all. I got three with windows, and ... knock on wood ... nothing wrong with windows. But if you miss a part like rails, believe me it will be hard to find.
Newegg does not get these from manufacturer, they get them from ABS and Nutrend, their sister companies. The cases are one way or another unfit for ABS/Nutrend and that is why newegg sells them as "refurbished."