I send between 90 and 100 cards - store bought I'm afraid I write them a few each day (5 or 6 ) all through November then the last week in November I take all the international ones (lots as I have family and friends all over the world) and get them weighed and stamped ready to go. I buy enough Christmas stamps as soon as they are issued and stamp as I go then all I have to do in December is put them in the mail box. No queues and no hassle. Don't write letters though one or two have a little note added in.