Why does line 34 of my code return "attempt to index nil with "price"?

local currencyName = "Money"
local DataStore = game:GetService("DataStoreService"):GetDataStore("TestDataStore")

game.Players.PlayerAdded:Connect(function(player)
	
	local folder = Instance.new("Folder")
	folder.Name = "leaderstats"
	folder.Parent = player
	
	local money = Instance.new("IntValue")
	money.Name = currencyName
	money.Parent = folder
	
	
	local ID = currencyName.."-"..player.UserId
	local savedData = nil
	
	pcall(function()
		savedData = DataStore:GetAsync(ID)
	end)
	
	if savedData ~= nil then
		money.Value = savedData
		print("Data Loaded")
	else
		--NewPlayer
		money.Value = 100000
		print("New Player to the game")
	end
	
end)

--//Video #2: Start\\--
game.ReplicatedStorage:WaitForChild("Check_Price").OnServerInvoke = function(player,NameOfCar)
	
	return game.ServerStorage.Cars:FindFirstChild(NameOfCar).Price.Value
	
end
	
game.ReplicatedStorage:WaitForChild("SpawnCar").OnServerEvent:Connect(function(player, NameOfCar)
		
	local car = game.ServerStorage.Cars:FindFirstChild(NameOfCar):Clone()
	car:SetPrimaryPartCFrame(player.Character.HumanoidRootPart.CFrame + Vector3.new(0,0,15))
	car.Parent = workspace
	car:MakeJoints()
	car.Name = player.Name.."'s "..NameOfCar
		
end)
--//Video #2: Finish\\--
	
game.Players.PlayerRemoving:Connect(function(player)
	
	local ID = currencyName.."-"..player.UserId
	DataStore:SetAsync(ID,player.leaderstats[currencyName].Value)
	print("Saved")
	
end)

game:BindToClose(function()
	
	--When game is ready to shutdown
	for i, player in pairs(game.Players:GetPlayers()) do
		if player then
			player:Kick("This game is shutting down")			
		end
	end
	
	wait(5)
	
end)

The code for the local script is:

script.Parent.MouseButton1Click:Connect(function()
	
	if script.Parent.Parent.Purchased.Value == true then
		
		--//Spawn It\\--
		game.ReplicatedStorage.SpawnCar:FireServer(script.Parent.Parent.Name)
		
	else	
		
		--//Let Them Purchase Car\\--
		local PriceOfItem = game.ReplicatedStorage:WaitForChild("Check_Price"):InvokeServer(script.Parent.Parent.Name)
		
		if game.Players.LocalPlayer.leaderstats.Money.Value >= PriceOfItem and script.Parent.Parent.Purchased.Value == false then
			
			game.Players.LocalPlayer.leaderstats.Money.Value = game.Players.LocalPlayer.leaderstats.Money.Value - PriceOfItem
			script.Parent.Parent.Purchased.Value = true
			
		end
		
	end
	
end)