Most all of the campgrounds around here it's illegal to transport firewood around. In our case they're trying to suppress the spread of the Emerald Ash Borer. Might want to take that into account when considering this sort of thing.
We make our own firestarters at home. Just takes some egg cartons (the paper ones, not the plastic ones) and saving up some dryer lint. Only thing that actually needs to be purchased is some wax (home canning supplies), any old candle left-overs works too.
Anyway - cram the lint into the egg carton wells as tight as you can get it - then pour the wax over the lint. Break up the result into single well chunks and you've got decent firestarters.
Course - BBQ lighter fluid works nicely too.