Chaparral also has good tire prices. I also found a few package deals on the web a few months ago when buying for my TL1000S. I saw several Dunlop 208 or Michelin pilot packages in 120/70x17 and 180/55x17 for Around $225 incl shipping. The 208's were excellent on my TL, and I hear the Pilot's are even better.
These are premium performance tires, you should get 3,000 mi out of the rear for the Dunlop and maybe 2500 mi for the Michelin on a B12 without burnouts.
I will be shucking the stock michelin's in short order on my new B12 with one of these. good Luck, Ed.
2005 GSF1200SZ
1983 GS750ED