Seeking feedback on "Direct Buy" club

Hello moms and any dads out there. I recently bought a land where I want to build my house. My question to you is if any one has information or joined the "Direct Buy" club? I hear that this club can help you save hundreds or even thousands of dollars on your home if you are building or maintaining. Since I am going to start to build my home I could use every discount that I can get. (Especially during this economy). Is it worth joining?
Thank you all in advance.