I load with a Hornady LNL Progressive, RCBS 5-10 scale, Wilson Case Trimmer, Midway Tumbler, Mitsutoyo calipers, RCBS Hand Priming Tool, RCBS Case Master, Lyman Case Prep Kit(Cheap Drill) and numerous smaller tools.
I load for 223 Rem, 300 WSM, 38/357, 375 JDJ, 40 S&W, and 45 ACP. For each, I need dies and a shellplate. I also need a shellholder for neck turning and priming for the 300 WSM. So add on cost per caliber is $75ish.(dies, shellplate, trim case holder, crimp die, etc.) I also use Lee Factory Crimp Dies. For rifle dies, I prefer Forster, with the Ultra Seater. I get very low runout.
So, that is about $800 worth of base tools + $75 a caliber.
I looks like that RCBS kit will get you loading for like $300, and it will, but soon you will want to ease your process. The kit contains - but soon you will want:
Reloader Special 5 press - a good turret or progressive press
Case loading block - to eliminate this from your process. I use small cardboard boxes.
Case lube kit - I use Hornady One Shot in said cardboard box.
Primer tray - You’ll always need this.
Powder funnel - You’ll always need this, but may want a drop tube in the future.
505 powder scale - OK at first, but a quality scale elec or mech is nice.
Deburring tool - This is only part of case prep, next is primer pocket cleaning, primer pocket uniforming, primer crimp removal.
Speer reloading manual - Good at first for process help, but usually the process is over simplified. Also, data in manuals gets “old.” I prefer going to the powder mfg web site for latest info or calling the bullet and powder mfgrs.
You’ll pull your hair out without having:
A powder measure
A powder trickler
A case tumbler
A case trimmer
Calipers
Headspace and OAL measuring tools
Just these few additional tools will cost $375.
Then there is the chronograph, etc. It is an addiction.
For starting out and fairly low volume up through 200 at a sitting, I reccomend:
Lyman T mag kit
This kit can get you started and will still need some add ons, but overall, it is a much more complete kit, IMHO.