For only pistol, a cast iron press isn't necessary...it is for full-length resizing rifle cases (or swaging bullets, which few people do anymore). You can often find used presses at gun shows or some gun shops. Any make of press that uses standard dies and shell holders will do for you. Or, consider the Lee Anniversary kit...
But, if there is a chance you will reload rifle cases in the future, a cast iron press makes the best sense. I'm using a Herters cast "C" press over 50 yrs old, and a RCBS Jr press I bought second hand for about $35 about seven years ago...both are veterans of many tens of thousand reloads, and both are in "like new" condition. I occasionally use them both set up side by side to do successive reloading steps...a "Poor Man's Progressive"... But even then I could use a cast press for rifle resizing and an aluminum press for the bullet seating and crimping.
Check out EBAY and gun auction sites for inexpensive presses...or even place a "want" add in your local newspaper or range bulletin boards...