Me too! Almost the same date.
The day after you, Jan 22, 2009, I went into the same shop, World Camera Inc, 101 Jefferson Street, to buy a battery for my little camera. Using a mix of lies, false information, pretense, and down-right low and lousy sales-techniques, the guy there talked me into buying a lense for my larger camera, as well as UV-filters, at altogether almost double their value.
I went back 2 days in a row, complaining that it was not a fair deal because lies and deceit were involved, so they had to take the stuff back. No such luck, but with much effort I managed to get 200 dollars and a false receipt back - to equivel about one-third of the amount I felt I had been ripped off for.
Everyone should be warned: WORLD CAMERA, INC., 101 Jefferson St., Fisherman's Wharf - DO NOT BUY ANYTHING THERE.
I am looking into launching an official complaint with the SF Tourism Board and also the Federal Trade Commission.