Found this interesting quote about Christian Bookstores:
My guess is that in the current Christian bookstore the simplistic books outweigh the simple books by at least 10 to 1. I've often wondered where Jesus would apply His hastily made whip if He were to visit our culture. My guess is that it would not be money-changing tables in the temple that would feel His wrath, but the display racks in Christian bookstores. -- R.C. Sproul, Lifeviews, (Revell 1986), p. 184.
Sproul was lamenting the lack of interest in doctrine, and the inordinate interest in "easy steps" instruction.