I begrudge no expense when it means seeing a friend, and it was my own choice to go with a medium drink since it was hotter than Satan's undershorts on the Peninsula yesterday (mid-nineties by some accounts). But if you're selling smoothies and they cost $4.25, that should tell you something about your coffee and tea-based prices, i.e. they shouldn't be the same amount. 4 and change for an iced chai? You're driving people into the arms of Starbucks.