@Luke Babich
Magic Pak is just one brand, and typically a more expensive one at that (I included the link because they have a nice video). There are multiple manufacturers but I used a brand called National Comfort Products, see link below. But the unit itself (no labor to install, or duct, piping, etc.) was about $2500. You are correct that the unit may be more expensive than a traditional split furnace & condensing unit, but you save big on the labor.
In regards to the noise, the heat cycle is no louder than a typical furnace, just the sound of the burner and blower. The cooling cycle is somewhat louder because the condensing unit that would have been outside on the ground is now in the closet. That being said, it's just a white noise/humming sound, just like having a window air conditioner. Its really a non-issue.
Shoot me a PM if you want to know more. Happy to send pictures or go into more detail!
http://www.nationalcomfortproducts.com/left-menu/ComfortPack/Spec-CPG-U.pdf