Right now you can get a jumbo pack of Huggies Santa diaper pack for $4.99 at Toys R Us. This is available in size 3,4 and five. These are available for in-store pick up only.
I am not sure if you may be able to apply insert coupons to this purchase once you pick them up in store. I guess there is no harm in asking. So there is a $1/1 Huggies Diapers 01/15/2012 SS Insert (exp 02/11/2012) coupon available.