Past years have found me running around last minute - and ending up at Shutterfly - nice quality, but ugh, on pricing and no options on the bottoms!
However, last year I was sooo late, I took some to Kinkos - now FedEx Kinkos - less than half the cost, same quality, bound with clear cover, no shipping. Took in a thumb drive, and 2 hrs. later - calendars. Wow.
Note - this is not using their "calendar" offering, but their "presentation" offering - if you are providing them with the top and bottom of the calendar.
Those of you in the US - I'd recommend y'all look into your local
FedEx Kinkos - I know each run their own specials, and IMO it's worth a look.