Can someone explain to me why my script for a buy button in my tycoon is not working?

Hi, so I am making a tycoon and I have ran into a problem with a script for my buy button here is the code

repeat wait() until script.Parent.Product.Value ~= nil
local product = script.Parent.Product.Value:clone()
script.Parent.Product.Value:Remove()
price = script.Parent.Price.Value

script.Parent.Head.Touched:connect(function(hit)
    local char = hit.Parent
    if char:FindFirstChild("Humanoid") and game.Players:GetPlayerFromCharacter(char) then
        local plr = game.Players:GetPlayerFromCharacter(char)
        if plr.Name == script.Parent.Parent.Parent.OwnerName.Value and plr.leaderstats.Money.Value >= price.Value then
            plr.leaderstats.Money.Value = plr.leaderstats.Money.Value - price
            product.Parent = script.Parent.Parent.Parent
        end
    end
end)

and here is the error

14:48:39.733 - Workspace.Tycoon.Purchasing.Purchase - Price.Script:10: attempt to index global 'price' (a number value) 14:48:39.734 - Stack Begin 14:48:39.734 - Script 'Workspace.Tycoon.Purchasing.Purchase - Price.Script', Line 10 14:48:39.734 - Stack End

I have tried to fix this but I have had no luck whatsoever so I will be very thankful to anyone who can help me,