RE: How much of an investment to start reloading??
Depends on what you plan to reload. If you just have a .270 or 30-06 it' s not worth the time and money unless you just want another hobby or are very anal about accuracy (like me).
That being said, it' s a great hobby and I can' t seem to get enough of it. I have RCBS kit and I believe it is worth buying the better quality stuff as it lasts longer and is more precise. Cost with the RCBS Master Kit is going to be around $250 plus figure another $100 to get bullets, primers, powder, dies, shell-holders and misc. that is specific to your caliber. Just make sure to read the manual thouroghly. I really like the Nosler books and they are a great read to help you get started. The dies come with directions too so anyone can set them up right.
You' ll want to neck-size only all your fired brass, they last longer when you only neck-size. The rest you' ll pick up by talking to everyone here and reading around.
If you have more questions you can email me direct.