PetSmart has new offer for $4/$15 an on-line purchase with the coupon code BDAY2DOG12. Not only can you save money that way, they are also one of the vendors which offer free shipping through Shoprunner!
I found Purina Busy Chewnola Treats on sale for $3 a package. I was able to get 5 packages for a grand total of $11 shipped — or just $2.20 each:
If you have not signed up for a Shoprunner membership, you can get 30 days for FREE! It is a great way to just try it out before you spend the annual fee of $79 to actually purchase it. If you do a lot of shopping online it can absolutely pay for itself very quickly!