Button = script.Parent
Price = script.Parent.Parent.Adornee.Parent.Register.MoneyCharged
Money = script.Parent.Parent.Parent.Parent.Money
Button.MouseButton1Down:connect(function()
Money.Value = Money.Value - Price.Value
end)
(It's in stratergui too)

2 comments
All the those Parent maybe is cause of problem. I wonder if you could post a picture of the location of all the "Objects" your using in your script. It might help me to solve the problem your having.
Yes, the paths are probably wrong, or something.