while true do
    -- Buy
    local buyArgs = { "chalices", false, true }
    local buyResult = game:GetService("ReplicatedStorage")
        :WaitForChild("Packages")
        :WaitForChild("Knit")
        :WaitForChild("Services")
        :WaitForChild("ShopService")
        :WaitForChild("RF")
        :WaitForChild("Shop")
        :InvokeServer(unpack(buyArgs))

    print("🛒 Buy result:", buyResult)

    task.wait(10) -- give time for item to register

    -- Sell
    local sellArgs = { "chalices", false, false }
    local sellResult = game:GetService("ReplicatedStorage")
        :WaitForChild("Packages")
        :WaitForChild("Knit")
        :WaitForChild("Services")
        :WaitForChild("ShopService")
        :WaitForChild("RF")
        :WaitForChild("Shop")
        :InvokeServer(unpack(sellArgs))

    print("Sell result:", sellResult)

end