Hi there, coming to the Bay Area next weekend and will be based in Pleasanton, SF and Palo Alto, so using Bart, Muni and Caltrain and Clipper seems the way to go. Is there anywhere to buy a Clipper card at SFO? The nearest locations seem to be Walgreens in Millbrae. Are they really not sold at BART stations?

I realise that you can buy them online, but they won't ship to outside the US. Seems a bit odd that international pax arriving at an international airport can't get the most flexible form of ticketing...