Make all the trick-or-treaters smile with a cute costume for your furry friend. PetSmart has 20% savings on dog costumes, plus you can get the second item for an additional 30% off. Prices for costumes start at $8.99 and costume accessories like hats for $5.99. This Top Paw Bat Costume is $13.59 (Reg $16.99). Shipping is free on orders over $49.