Yes, it IS time to update more frequently

Scene: Starbucks in Dulles airport, half an hour after disembarking a 7-hour flight from London.

Me (mumbling through the jet lag): A grande mocha frappuccino, please.
Cashier: Okay, that'll be $4.20.
Me: *pause* But... it says $4.00 up there on the board.
Cashier: Uh, yeah, that's before tax.
Me: Right.

Welcome back to the US, land of infinite possibilities and taxation.