If Google is allowed to arbitrarily set the price of their ads, and they are, then any legal pricing scheme (i.e. not running afoul of discrimination or price g

If Google is allowed to arbitrarily set the price of their ads, and they are, then any legal pricing scheme (i.e. not running afoul of discrimination or price gouging laws) ought to be fine as long as they're lying to you about it or making false claims.