Space

You get to space with the trampoline. You will need a couple thousand gum in your backpack or you won't jump high enough. After you jump to space, there are eggs, 3 of them, magma, crystal and lunar. A magma egg costs 2000 gems, a crystal costs 17.5k gems, a lunar cost 50k gems. It also has another shop which you will be able to buy items from, see the items at the Gum & Flavors tab of the wiki. Jumping there isn't too hard, but the rewards are great especially because by the time you get there you already have the best stuff in the basic shop. After you get to space you can also teleport to it. Space is 518m high but it's definitely worth it, there are lots of coins to get also (If the 60 other people camping there left).

I wish there was a selling place on the moon!