On 26 November I placed an order for two books listed as available for delivery from the UK within 2 days. My credit card was immediately charged and I received an order confirmation.
I never had any more communication from Book Depository, but when I checked my order status online, my order was displayed as cancelled. I emailed Book Depository --- there is no other way to contact customer service --- and didn't receive any assistance.
Finally on 1 December I received a refund on my credit card. Still no information at all from Book Depository. In the meantime one week has passed and timely delivery before the holidays is now in doubt.