I was approached by some Catholics in town only the otherday selling little crosses and blessed virgin necklaces. One of them approached me trying to sell something. I told him "Didnt Jesus turn the money changers out of the temple for this sort of thing?" his reply was something like "the Jews were cheating eachother etc etc." then my reply was "God doesnt need money. If he can provide manna in the wilderness but cant fund your cause then that tells me he doesnt have your backing".
If God needs to sell his own book then he aint no God.