Are you talking about
this kit? If so, I only see pads, shoes, steel lines and caliper
sleeves. There's nothing mentioned about actual calipers.
As far as the pricing goes, you might be underestimating the cost of steel brake lines. A two-line steel brake kit for my GSX-R cost me $130, and that's pretty much about market value for them for bikes. The MM kit includes 3 lines. I'd say that the MM kit might be a bit pricy, but I wouldn't consider it outright expensive.
I prefer EBC pads and upgraded to a set of their Green Stuff on the front of my Stang.