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I always love returning to Caspar Milquetoast, because I feel a certain kinship with him. While I make gifts for my family rather than buy them, I have found myself woefully unprepared for Christmas in the past, so I try to make sure to get all of them completed and sent out as early as I can. Given the date of this comic, it seems that Caspar bought all of his gifts at the beginning of November. That seems a bit early to me, but I started making my gifts this year at the beginning of November, so I guess I can't judge.
Further, I think Caspar can be excused for not buying his "friend" here a present. Since he's not into gift giving, Caspar may have assumed he wasn't too keen on gift receiving either. Or maybe he's just not as good of a friend as all of the other people on Caspar's gift list.