Filed under: GPS, WirelessLooks like that sale at Amazon's turned into a full blown price cut -- Dash has officially lowered the price on the Dash Express from $400 to $300 (not including service, of course). Of course, this can be interpreted one of two ways: they're selling so well that economies of scale have kicked in, and everyone saves money buying the GPS -- or, the fresh-faced company's sole product isn't doing very well in the marketplace, leading to this second price drop so far. We're hope it's not the latter though, we're definitely stoked to