Hi Alan,
The other place to try would be
www.razorandbrush.com. I usually order blades from there, and also other things Giovanni (the owner) stocks. Wonderful selection of unusual shaving soaps and creams, plus his own house brand (which I like). Hehe, I'm waiting for an order now, with some blades and Cella shaving soap. I think you'll find the prices on the two sites to be very close (and reasonable).
Anyway Alan, your best bet would be to try 4-5 different blades. Read the reviews about who likes what the most, and you'll see a pattern emerge pretty quickly. To me, there's certainly no reason for you to get a large sampler pack with 15-20 different blades to work through. I think you'll be surprised at the way each blade performs, and 4-5 different ones should be plenty to start with and hopefully find the perfect blade for your face.
Hope that helps a bit,
Martin