RE: Want to start reloading
That's an awfull big question! Costs varry from cartidge to cartidge, type of bullets, brass, powder, primers. Pick your calibers then price what the different components cost and compair to what ammo costs. Find a good reloading manual, like Speer, Hornady, etc or a book dedicated to reloading (might also do a google search on the Web for cartidge reloading), there is just too much to explain right here.
It's not always cheaper. Tools very quite a lot in price and quality. With the tools, press, scale, dies, you pretty much get what you pay for, the cheaper stuff will work just fine, but it won't last as long as the costlier goods. A good book or manual will expain about what tools to get and how to use them.
I started with an RCBS Rockchucker press, RCBS dies and scale. Since then I've added many extra gadjets but Istill have and use the Rockchucker press and dies, that was over 30 years ago.