Following up as promised: I didn't receive a response to my request for an update, and couldn't reach them by phone, at which point I sent a more sternly worded message to state that I'd initiate a chargeback if they didn't come back to me to explain the unexplained delay + lack of communication, either with a refund or confirmation the order was going out. I received a response within minutes, and a shipment notification the next day. I haven't received the order yet, but I have the tracking number to see it's on its way. Perhaps it was pure coincidence, but I doubt it --- I suspect they're simply a bit disorganised and the subject of my harsher e-mail got their attention and prompted action. A shame, if so, as they seem to mean well. Still, I don't think I'd purchase from them again.