While the press is the heart of the setup, if not buying new or processed brass you also need to get the brass clean. Something like the below is a cost-effective method:
I use one of these over a 3 (or 5?) gallon bucket from lowes. I drain out most of the water, rinse it a bit, then use a cheesecloth like material to drain as much water off as possible and then dump it over the separator.