>>For instance, my favorite tactic when someone is pushing hard to sell me something or negotiate is the "Appeal to the authority" (i.e. "Let me first talk about it to my wife (or co-founder) about it."
In the UK, some sleazy sellers of things like double glazing won't even start discussing the sale unless both husband and wife are present to prevent this tactic.
In the UK, some sleazy sellers of things like double glazing won't even start discussing the sale unless both husband and wife are present to prevent this tactic.