Do you know where could I buy a skeleton of a real frog in Manila at affordable prices?

Since my clmates and I are having zoology subject I'd like to buy a skeleton of a frog that I could study at a closer look at home. My friends suggest far off places like their provinces outside Metro Manila. Yet, none of them will be going pretty soon. So, I was wondering if you guys could suggest a place in Metro Manila where I could buy one. Thanks.