flitz, I suggest you pass up the old JR 3 press or any made like it. They were good at one time but that time has passed. ALL modern presses have a "compound toggle" linkage on the operation arm, meaning those twin link bars that now connect the press body to the bottom of the ram/lever. That design immediately obsoleted the simple toggle arm on the older designs. The compound toggle greatly increases the leverage and makes sizing or reforming cases MUCH easier! And "O" presses are much stronger that the "C" design.
If you want to get into reloading with a new but high quality press at a good price, look at the new Lee "Classic Cast" press. It's all steel and cast iron, very strong (no aluminum alloys), very well made, has a very large opening, a big ram, and the spent primer catcher is much better tban any other except the more costly Forster "Co-Ax" press. If I had to replace my Rock Chucker tomorrow it would be with the Lee Cast tool.