Just a small world experience, but a couple years back while living in Tokyo, I was at the Yodabashi camera store in Akihabara when two somewhat elderly ladies approached me to ask about iPhones. They turned out to be Americans looking for a deal on the phone. Aside from informing them about contract/usage issues, I basically told them that they would be better off using B&H's online service. One of the women then responded, "BH? We're from New York, we know the owner." Of course, I told them that they should see if they could snag a discount.
Anyway, I was in Bangkok when I ordered an Epson 2400 from B&H, and to this day, I remain impressed how quickly the beast arrived (particularly given the inherent obstacles of the Thai postal system). And although while subsequently living in Tokyo, replete with great camera stores, I still needed some US-based items (Canon 7NE new was about US$400 to US$500 less than Yodabashi's offering), and B&H always promptly delivered the products.
While I'm B&H centric, I've heard great things about Adorama, and NYC, my current joint, is lucky to have two of the world's best photography stores; Saturday's closures are a small price to pay.