(Where to begin...)
It wouldn't really matter, if he was selling manna or literal ambrosia.
In business, there is always some nihilist or iconoclast, falling on the floor and saying they were maimed.
So, it is risqué, to mix church and business.
In the fundamentalist, totalitarian sense, to use God's name in vain was a capital offense -- the reason why David killed Goliath.
Yet, in every church foyer and potluck is some Arminian, telling you how to merit grace by participating in some Ponzi scheme.
They go on tv, and say that some indispensable piece of religious counsel is sold in a book or dvd. They have conveyed a blessing or a healing, in some oil, a piece of cloth for you to buy, or some tacky, plastic relic or questionable nutraceutical.
"Thy money perish with thee, because thou hast thought that the gift of God may be purchased with money."
-- from Acts 8
Seriously, what is he selling, here, chlorine dioxide, or pixie dust.
Also, when seculars peddle their chemicals, under the color of authority, what are they selling. Have there never been any recalls (daily) or nepotism? At least, the snake oil salesmen don't force you to participate.