Yes, everything is expensive these days, isn't it?
LOL - once in a great while I'll get a sweet tea if I'm out and completely dying of lack of caffeine, but even then, I'll usually ask the waitress to make it half-sweet and half-not... or just get unsweetened tea. But getting anything other than water to drink if I'm out isn't usual for me.
I'm kind of surprised nobody has released a "flat soda" for general consumption. I guess there's little point, though, because if that's your preference, all you have to do is release the cap and let the bottle sit overnight...