I know Shawn and Steve H. both recently built some pergolas out of timbers, logs, etc. What is a good source for reasonably priced timber/lumber? I need to make repairs to my balcony/porch and thought about adding on an additional covered porch to the end of it while I'm 'in there' and have stucco off. I'm thinking about making the additional porch out of exposed square cut timbers and T&G decking.