Feeling too old/ Times are changing

Mom: Wanna come in the store to get a snack?
Me: Sure, I'm kind of hungry.
Mom: You got a dollar *mom look*
Walks into store
Me: I really want some plain lays chips. Picks up chips 50 cents. ARE YOU SERIOUS? This is ridiculous.
Mom: Yup.
Me: I remember I could get 4 bags for a dollar, times are really changing.

Even though I am only about to hit 18, it really feel as though things are changing around me. Or maybe I am just starting to notice them now. I guess this is the time when we all start realizing we are actually adults...who would have thought a bag of Lays could show me so much?