I started playing this week and was looking at all the skins in the collection tab but when I go to the store, I only see a small portion of them. How do I see the rest of them?

I really like the zedd bundle spray one of the few sprays that I actively enjoy using, it looks really cool and the music along with it is great although the bundle may be a bit overpriced, I think more of these types of sprays would be gre...