Active tire rebates Dunlop and Bridgestone.
Bridgestone is $60 Visa card rebate on a set of S21 Hypersports and others.
Dunlop is $40 for a set and $60 if you get a service (like install). Q3+, I hear no Q3, only Q3+.
Best price I could find (taxes, shipping, everything) was $213... $153 after rebate for a set of S21s.
2Wheel.com, Motosport.com, AmericanMotoTire.com are all in about the same price range.
Bottom line is $153 is about what you'd expect to pay for one tire, hard to beat these prices.
BTW, the S21 is being replaced with an S22, the grooves look like the Road 5 with that 3D cut pattern, but the price took a nice jump, so I'm going with the S21s for now.