Why? ??? It would be incredibly useful!
Basically, specialk hasn’t got around to doing it yet. We could add the shops,but we have no idea of what prices he wants, and we don’t want to destabilise our economy.
I think watermelons should be sold to admin shop at 100/coins a slice! 
Nah, I’m kidding. But seriously, quite a few things are still unavailable from the admin shop… 
I had thought they were not included intentionally. It seems as if they should remain rare/hard to get. Players can sell em at premium prices!