Buying a supply drop from the shop only costs 1 point when set to 5
tis also ignoring the cooldown set for some reason
Only seems to be an issue for the commands tab, items in every other tab work.

    "Airdrop Call": {
      "DisplayName": "Supply Signal",
      "CraftAsDisplayName": false,
      "Shortname": "airdrop.call",
      "MakeBlueprint": false,
      "EnableBuy": true,
      "EnableSell": false,
      "Image": "https://rustlabs.com/img/items180/supply.signal.png",
      "SellPrice": 1.0,
      "BuyPrice": 5.0,
      "BuyCooldown": 3600,
      "SellCooldown": 0,
      "BuyQuantity": [],
      "SellQuantity": [],
      "BuyLimit": 0,
      "BuyLimitResetCoolDown": 0,
      "SellLimit": 0,
      "SellLimitResetCoolDown": 0,
      "KitName": null,
      "Command": [
        "inventory.giveto $player.id supply.signal"
      ],
      "RunCommandAndCustomShopItem": false,
      "SkinId": 0
    },

https://gyazo.com/120f2b437797e3ac187020bb97d2a992

You have modified that item incorrectly which is why that item is invalid.



Display Names must match item names. ( like everything else in GUIShop )

thanks for the clarification here