I started out with a Lee starter set for around $70. Dies will probably run about $10-15 apiece depending on where you look. Powder will run about another $25. Sierra has the best loading manual on the market I feel, and highly recommend it.
I believe that the meplat is the size of the flat front of the bullet...I could be wrong though.
I would buy the Sierra manual or the Hornady manual and read it thoroughly...then proceed on your purchases.
I would recommend Midway. They are a great source of reloading supplies and are good people to work with.
Best of luck and report back on your progress...always good to welcome another reloader into the ranks.