Let the hive mind of Engadget get that for you.
"I've found myself using my PC for a lot of conversations lately, and I'm also considering recording a podcast to share with anyone who will listen. There are tons of USB headset / microphones out there, and I'm hoping someone has some solid recommendations based on experience. I'll consider both headsets and standalone mics, by the way, but I'd like to keep the bill under $100 if possible. Help!"
It's a modular system so it depends on what you want to integrate.
The software is about $300 (need your own windows computer)
A Security system that can be controlled is about $600
A wireless touchpanel is about $1000
I have about $600 in lights
Whole house audio is about $2500
So compared to $7000 crestron touchpanels, it's a reasonable price.