Alan, I hope you have better success with PhotoByte than I did. I really wanted to use the software because I liked many of the functions and features. But after really trying hard to make it work, I dumped it for FotoBiz and BlinkBid. I just found PhotoByte very counter intuitive to use, plenty of holes here and there, no plan to fix or update the software by the author, and he has all but abandoned it. I didn't want to use that as a basis for managing my business into the future.
The combination of FotoBiz (with FotoQuote), and BlinkBid works very well for me so far. Very intuitive, not as feature rich, but it all works and works well, and the authors are behind the software and making updates. BlinkBid is also under development to integrate with QuickBooks which will be a very nice feature since I run the accounting through it.
I agree that any pricing data researched is only a starting point. One of the things that I did to try to make the data more palatable was to compare pricing at the major stock agencies, FotoQuote, ASMP, EP, and local data and information gleaned, and then use the tools in FotoQuote to adjust its database to match the average of those prices. Now I have a reasonable database of 'average pricing', which I can then adjust based on the client, project, local market, and so on. Its given me the confidence to know that my pricing is at least reasonable, and enable me to stand behind it. FotoQuote has ways to modify the pricing data, so it makes it fairly easy to adjust as needed.
The Editorial Photographers site has historical data as well, and tied to specific magazines/publishers. They also have some good data on the contracts being offered to photographers, both good and bad. Its another resource that unfortunately isn't as up to date as I would like, but still contains good data for making those pricing and contract decisions.