A basic setup gives you moderate qualities of very decent ammo so long as you watch the things that should be watched, and is a good starting point.
There are more-expensive progressive presses (Dillon, etc) if you want to crank out large volumes, eg one round per handle pull rather than one per four-or-so operations, but since a bunch of things are happening at once it's probably better to start with a simpler press and learn all the things that happen one thing at a time before cranking up the whole orchestra.
Another direction people go is to load insanely precise rounds for benchrest shooting, but that's another direction to maybe refine in after getting a solid grounding in the basics.
Lots of people end up with more than one press, and that lets you stay set up for multiple calibres and not have to tear down and recalibrate as much, or maybe there's a rifle press and a pistol-ammo press, or one keeps the small-primer feed and the other does large-primer calibres. Maybe you'll want to churn out bulk ammo in one calibre and go for high precision with another.