Audrey,
Bernie on our forum bought the larger Bose sysytem and I am guessing it was somewhere near $2300. But he now owns the smaller Bose Compact at a cost of $999, that is what I also paid.

From what I understand he is using the Bose Compact most of the time now. I am guessing here -- the sub and amp (one piece) is about 28 pounds and the speakers about 19 pounds.
I feel the compact could handle a room of 150. I have heard of people using two compacts for a room of 300 to 400 people. All hear-say.

John C.