most of the time if you press up on the shop items menu when its at the top of the list a item called undefined x pops up and u can buy as much as u want
Me:I need a phoenix that shoots explosive barrells and a pterodactyl that shoots highly explosive nitrous tanks. Petco clerk: You are so lucky we have only one left!
the reason they dont tell you the prices of guns instead they say not available is they dont want hackers with 10000000 coins to kill level threes with rocket launchers. + so people stop spamming, eh god it says not available weak dude.
I accidentaly hit right click during a battle and i ended up on the main menu with a flamethrower with unlimited ammo and people were still shooting me + so the makers of this game can find out about this problem and fix it