Ayaka will get a pet. She is choosing between a dog and a cat. The price of a dog from a breeder is $2000 and cat is $1000. Dogs need to be walked twice a day, which takes time, cats do not. The costs of all other spending on the cat and dog (e.g. price of tood, vet bills, ete.) are exactly the same. Based only on this information, if the breeder gives Ayaka a discount on the dog making the price S500 instead, her Opportunity Cost of owning a dog is decrease and her Villinenees to Pay for a dog is _