I just posted an ad on Kijiji here in Canada for Hickory chunks I am cutting up. Kijiji is similar to CraigsList. I am charging $6.25 for 5 pounds - which I think is reasonable. If you have access to a wood splitter and a good power saw you might consider doing what I did and get a skid.
This is what I split and turned into chunks today after work....about a 30th of all I have to do: