Depending on how much shooting you plan on you can spend as little as $100 and have everything you need or you can drop a months income.
If you plan on 100 rounds a month or less than the Lee Classic loader and a few other things will be plenty and it all fits into a 50 caliber ammo can except for the powder.
If you expect to shoot from 100 to 300 or so than a single stage press and a few more items totaling about $300 will suffice.
More than that that and you will spend a lot of time reloading or spending big bucks for a progressive press and accessories.
what ever you decide buy and read some reloading manuals first. They well show you how to go about reloading and answer a whole lot of question you will have.
FWIW I have been reloading since 1969 and I started with a Lee classic loader then worked my way up through a single stage press to a manually operated progressive press to my Dillon Square Deal B press for pistol cartridges.