Seriously, Starbucks is hugely overrated. I've found that some of the best coffees are often found at the convenience stores at gas stations. I can go into my local Kelly's Market (Mobil gas dealer) and get a 32 oz. mug of fresh brewed coffee for $0.69+tax. I got the large cup with my first coffee purchase some years ago. I bring in the empty cup and they ring it up as a refill. They specialize in Kona coffee.
On occasion you do find these out of the way places. Off the I70 in Evergreen, Utah there is an indie gas station and they make coffee that tastes like you are drinking velvet. The 20oz cup is about $1.10. I stop there every time I go past that godforsaken town, that gas station and the coffee are their only redeeming value.