Need help with a shop script please?

I have a shop script that uses a crafting system, but in a way my shop is unfair. Let me explain:

EX: Jimmy wants to try to buy a sword, he has 3 mushrooms but not 2 cows, when he presses the button, all the required amount of Jimmy's mushrooms are gone and the transaction is not made.

local items = script.Parent.Frame:GetChildren()

for i = 1, #items do
function buy()
    local item1 = items[i]:FindFirstChild("Item1")
    local item2 = items[i]:FindFirstChild("Item2")
    local item3 = items[i]:FindFirstChild("Item3")
    local item4 = items[i]:FindFirstChild("Item4")
    local item5 = items[i]:FindFirstChild("Item5")
    local Cash = script.Parent.Parent.Parent.Parent.leaderstats:FindFirstChild("Gold")
    if item1 then
        if script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item1.Value).Value > items   [i].item1Price.Value then
            script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item1.Value).Value =    script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item1.Value).Value - items  [i].item1Price.Value
            else return
        end
    end
    if item2 then
        if script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item2.Value).Value > items   [i].item2Price.Value then
            script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item2.Value).Value =    script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item2.Value).Value - items  [i].item2Price.Value
            else return
        end
    end
    if item3 then
        if script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item3.Value).Value > items   [i].item3Price.Value then
            script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item3.Value).Value =    script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item3.Value).Value - items  [i].item3Price.Value
            else return
        end
    end
    if item4 then
        if script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item4.Value).Value > items   [i].item4Price.Value then
            script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item4.Value).Value =    script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item4.Value).Value - items  [i].item4Price.Value
            else return
        end
    end
    if item5 then
        if script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item5.Value).Value > items   [i].item5Price.Value then
            script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item5.Value).Value =    script.Parent.Parent.Parent.Parent.Materials:FindFirstChild(item5.Value).Value - items  [i].item5Price.Value
            else return
        end
    end
    if Cash.Value >= items[i].Cost.Value then
        Cash.Value = Cash.Value - items[i].Cost.Value
        local tool1 = game.ReplicatedStorage:FindFirstChild (script.Parent.Folder.Value):FindFirstChild(items[i].ItemName.Value):Clone()
        local tool2 = game.ReplicatedStorage:FindFirstChild (script.Parent.Folder.Value):FindFirstChild(items[i].ItemName.Value):Clone()
        tool1.Parent = script.Parent.Parent.Parent.Parent.Backpack
        tool2.Parent = script.Parent.Parent.Parent.Parent.StarterGear
        print("Purchase successful.")
    end
items[i].BuyButton.MouseButton1Click:connect(buy)
end
end

no errors appear in the output or script analysis