If there is a Sherlock fan on your gift list (plot twist: maybe it’s yourself), you can take home seasons 1 - 4 Blu-ray gift set for just $50. It’s technically out of stock right now, but you can still order it and they’ll email you when it’s back in stock.
This normally sells for $90, so even if it arrives after the holidays, a $40 discount is a good reason to truthfully use the “Your gift is in the mail” line.