Camera/electronics stores in San Francisco?

For my Left Coast brethren: I'll be in SF for 4 days starting January 31st and I'm hoping to pick up a few things. First, I would like to pick up some high speed Sandisk Extreme Pro SD cards (95 MB/S)...where would be the best place to do that? The 32GB cards tend to run about $90-120 (!!) in Canada when not on sale. I also wouldn't mind checking out a store with a decent collection of tripods and accessories...any tips?

Thanks in advance.

--
Dave Sanders