Why Does This Work In Studio And Not In A Regular Roblox Server?

I understand that my question is very broad but I did not know how else to put it. To give you some context, I watching a tutorial about DataStorage and how to make it work with a shop GUI. The video I was watching on YT (https://www.youtube.com/watch?v=I-juZw7pmuQ&t). In short, I created a saving currency DataStorage and a shop GUI. When a player has enough points for an item in the shop, it will clone the item into the player's backpack and into the starter gear. This was successful in Roblox Studio but not in the Roblox Server.

Local Script:

for i,v in pairs(script.Parent:GetChildren()) do
	if v:IsA("TextButton") then
		v.MouseButton1Click:Connect(function()
			game:GetService("ReplicatedStorage").Events.RemoteEvent:FireServer(v.Name, v.ItemPrice)
		end)
	end
end

Script:

game:GetService("ReplicatedStorage").Events.RemoteEvent.OnServerEvent:Connect(function(player, item, price)
	print(price)	
	if player.Money.Value >= price.Value then
		local itemClone = game:GetService("ServerStorage")[item]:Clone()
		itemClone.Parent = player.Backpack
		
		local itemClone2 = game:GetService("ServerStorage")[item]:Clone()
		itemClone2.Parent = player.StarterGear
	end
end)

It returns an error saying "attempt to index local 'price' (a nil value)". Please look at the video I provided to try it out for yourself.