Here are a couple of great books:

Marcie Rozenzweig, The New farmer's Market
Sell What you Sow, Eric Gibson
Growing For Market newsletter

I can get lost for days at http://www.newfarm.org/. Check out the grassroots opx pricing. Not much there now, but it was full of info during the busier season. I think I have read 1000 of the "1000 stories". Hope this helps.

Patty

I haven't ready many, but of the one's I have that were definitely worth it, these are real practical and browsable, you can pick and choose stuff or read 'em whole:

"The New Organic Grower", Eliot Coleman, a standard recommendation, great

"Four-Season Harvest", E. Coleman also, aimed at home gardener but full of stuff good for the small-scale grower, too

"The Victory Garden Cookbook" by Marian Morash, combines gardening and cooking stuff, I find it great more for the veggie marketing side...you have to check it out to see what I mean (amazon.ca has a look inside sampler of some pages)

Johnny's Selected Seed annual commercial catalog (free by mail, http://johnnyseeds.com ), this is a fine market gardening reference that happens to be a catalog, too!