I ran across an ad for what may be a deal on some boat building cedar. It's on Craigslist, Olympic Peninsula (Washington), just type in cedar thats how I found it. I have no idea who is selling it or what it looks like, just ran across it and thought I would throw it out there, you never know.
There is also a guy who sells boat building grade Port Orford cedar a couple of miles north of Gold Beach Oregon very nice guy to do business with. His lumber is rough cut and full dimension. So a 2x8 is a 2x8. I think his prices are fair.