I would think so, but hard to really know without clear patternJust received mail with ETA from Adorama CS for my 12/30 MBP 16/512/Grey BTO. I just wonder how they are sorting the orders. Are all discounted products are delayed?
For submitted to manufacturer orders, usually card is charged the next day. You would assume that it will give you more of less a good estimate if you compare by then ordering directly from Apple, but in my case still off for later 2 weeks than what Apple would have delivered should I purchase from them. also the delivery seem to have come from Adorama warehouse vs expected directly from Apple.