Did a little snooping around and found this. While the types of wood are limited, the price is excellent.
Mark's Tree Farm sells Wild Cherry, Hickory, Apple lg. and sm. box, Red Oak, and their variety box which includes a mix of apple, cherry, and hickory.
25# - 30# boxes of 2" - 4" chunks, 1.7 cu.ft. of wild cherry $29.50 free ground shipping. Less than $1.00/lb delivered! I see an order coming very soon!
www.bestbarbecuewood.com