Guess how much it cost

Me (showing off my goggles): "Guess how much it cost, cheapest one in the shop! $7.90!"

M: "You are scaring us with your 'auntie' tendencies..."

Me: "What 'auntie' tendencies?!"

M: "Like how every other sentence that comes out of your mouth starts with 'Guess how much it cost'..."

Me: "... But it was a steal! I mean, come on, $7.90 for TYR goggles! Sure, the bright yellow is a little orbid..."

M: "Uh huh."