Awesome plugin !!
here some suggestions :
- add back button in the shop menu (there is only exit button)
- make the shop menu disappear automatically after buying item
- a command to show how much money you have (sm_money)
- add more items and upgrades like laser and explosive ammo
- let us open the shop menu in cooldown but can't buy from it
- after cooldown is over show message saying (shop is open now!)
.