I think I paid $2800-$3000 for the basic stove 2 yrs ago - there was not much leeway in Harman dealer pricing. I searched the net high & low & had people in other states check for me as well. It is what it is & you do get what you paid for.
The vent pipe does go right through the wall, basically you place the stove, vent it through your outside wall & plug it in & off you go. I heat 3600 sq feet of ranch & basement, stove is in basement. Once the stove is burning for the season, I do not use my oil burner any more. Could not be happier/warmer. ( standard coal burning happy face - no matter what stove you wind up getting
Your heat distribution depends on your homes configuration and your stove placement. Mine is in the middle of my ranch, in the basement. Works great.