Target has the Lego City Advent Calendar on sale right now for $27.90 with free shipping (search 13388747). Use coupon code TGTFA25C to get $5 off your order and you’ll get it for only $22.90 shipped! This deal will likely sell out quickly, so grab it while you can!
If you’d rather purchase from Amazon (or if the Target deal sells out), you can get it there for $27.90 shipped as well. You can also use your Amazon gift certificates from Swagbucks to get an even better deal!
(Thanks Adventures Of A Couponista!)