I asked the question a while ago on a different board and there weren't a lot of responses. That forced me to look else where. I looked in two different areas:
1. Publicly traded coffee companies usually have their annual review online so you could download it. Reading their review on the industry may help you. Also, all their financial information is there so you be able to do some financial ratios on their numbers.
2. Robert Morris and Associates publish their annual review of financial ratios. You should be able to find the book in the business reference section of the library. It's been a while since I looked to see what category coffee shops/roasters fell under, but that's one of the problems with RMA: one has to fit their business into one of the pre-determined categories.
In terms of independents, SCAA might post some information that they gather from their general membership. I have my doubts on how accurate the information is. I suspect that the majority of those folks over predict their revenues. That is a personal issue so I'll digress.
Mintel Consumer Reports publishes a report every year on coffee shops. It's caulk full of really, really good information, but the down side is it costs a fortune to buy. However, if you look it up, you might be able to get snipets of information that might be useful.
Those are the ideas I have....hopefully someone can fill in some details around others.
Roast Coffee Company