Region A BD/DVD Combo pack from Funimation will only run you $38 for part 1
and the same for part 2. Or you could just just wiait for the inevitable complete collection in a year or two.
Magic girls are a specific genre of japanese children's fiction that has been around for decades. Madoka was a recent attempt at selling it for adult audiences much like what Eva did for mech.
Not only just an attempt, but a huge financial success. Although, I think things like the Lyrical Nanoha
franchise which came before it, deserve some credit too for giving people the idea that magical girl stuff can be tweaked to appeal to a different audience. Case in point: me, because normally I wouldn't touch magical girl stuff with a ten foot pole, but I did enjoy the heck out of Madoka Magica