Auto parts stores usually have some sort of rebate or sale on wiper blades, but I generally find those deals to be awful (like only $4 off a pair of expensive blades). I just bought a pair of Bosch Direct-Fit wiper blades for $12.03 shipped from Amazon. Not bad!
Other than scoring 2 Bosch blades at Murray's for $10 about 2 years ago, and Costco having the buy-one-get-one on the Goodyear blades every fall, I'll keep buying my blades online from now on. Anyone else do this?