When I first started reloading, I had a press, scale and the cheapest dies I could afford.
I didn't do seating test, I loaded to recommended book length and stayed below max.
Fortunately I had a good rifle (only one rifle) and it produced 1 to 1/2 Moa groups and I was satisfied with that because I was a beginner.
Now.... I have several rifles, and although I do have some cheaper die sets for some, I have other tools to help be get good results.
Like, Chronograph, this is one of the most important tools I use. I can measure ES and get a idea what the loads are doing.
Case tumbler, this allows me to get my brass clean to inspect for problems like split necks and excessive case stretch.
Quality scale, this is just as if not more important than the Chrony. Consistent powder charges is everything or you have nothing.
Concentricity gauge, this allows me to set up my equipment to get the least possible run out.
Overall length guage, self explanatory
Bump gauge, allows me to set my dies up for my chambers.
Reliable calipers...
And of course, my data book.
I'm sure I left some things out, and these are not in a particular order, I'm just typing as they pop in my head.