The rule in my house: "What Baby wants, Baby gets!" If we're shopping, (yes, I go shopping with her...), and she can't decide between two blouses, I say, "Oh Babe, just get them both!" Never fails to win me favor when it's gun buying time!
Lunch at the mall with your wife - $50
Two blouses and a pair of shoes - $100
Honey, I need a new AR-15 match rifle for $1000, "Sure, Jim, whatever you want..." - PRICELESS!