Suffolk Machinery is currently running a bandsaw blade special. If you buy any three blades listed on the Silicon Steel Blade Selection Chart you get a fourth blade free. The three blades don't have to be alike. Mention code SP08 when you order.
I just ordered a 1/4x6, 1/2x4 (2), and a 3/4x4 and one of the 1/2's was free.