Wife's MacBook charger has just started sparking and looks dangerous so need to get a new one as cheaply as possible. Part of me objects to spending anything on it when I could just get her a new MacBook for 1000 euro and the charger will be about 90 and the battery is knackered. But what are my options ? App Store sells a MagSafe that looks the same and says 60w MagSafe for MacBook Pro. Is it the same and can I get a cheaper one ?