Hornady has a turn-key single stage reloading press starter kit that includes everthing except powder, primers, dies, and bullets (press, scale, powder measure, handbook, misc stuff). Amazon has them for $300 with free shipping. Montana Gold has excellent bulk prices on plated buwwets, and a lb of most pistol/shotty powders will be enough to load a case's worth of cartridges. Or you can go for broke and get a 4 or 8 lb kegger of bang dust.
To put it in perspective, for about the price of what you'd pay for a case of name-brand ammo you can have the complete setup and enough supplies to load a case of your own. Either way you end up with a case of ammo, but one way give you the ability to roll your own afterwards.
Brad