PetSmart cuts up to 50% off more than 450 pet supplies during its Cyber Monday Sale. (The discount is applied automatically in cart.) With prices starting at $1.99 after the discount, that's tied with our Black Friday mention as the best sale we've seen from PetSmart this year. (However, that sale included nearly double the number of items.) Sales tax is added where applicable. Shipping starts at $4.99, or get free shipping on most orders over $49. Deal ends November 26.