Hey folks. I'm all-grain for 8-9 batches and hooked.
Angelvito, I never tried Mr Beer, but I'm pretty sure it is one of the cheapest way to experience intro homebrewing. Someone bought my dad a starter kit for Xmas, years ago. we eventually tried it and I was hooked.
A non-Mr. Beer starter kit from Northern Brewer might cost you around $100 for a 5 gallon (two cases of beer) batch of beer (including equipment and ingredients).
Basic Starter Kit - Starter Kits