Costco's pizza is the best!!

I love Costco!! Especially this pizza!! It's cheap and big :D Of course, it tastes goooood!! Why are Japanese pizzas so expensive?? It should be cheaper... Right?
I tried to think why this pizza is better than Japanese pizza. I think main reason is cheese. They use different cheese. I think the cheese makes a big difference. What do you think?
What's your favorite food at Costco?