It depends on the sizes of your project. If it's $35K - $100K or mulitple projects It's worth it.....anything under that is questionable.
Be aware that when you go to the initial meeting they will show you how great it is and all the discounts and what not, then ask you for about $5,500 to join. If you don't join then, you can't come back again. And your record as one that didn't joined is placed on file at every location.