Brand new in box (but opened - bought the wrong one and lost the receipt) Magsafe to Magsafe 2 Converter.
You use this to enable your old and perfectly working Magsafe chargers to charge up your new Macbook's too. Same current, same output, designed by Apple for Apple.
Amazon has it for $33 new, this brand new one is $20.
Lesson learned :)
Will bring to Victoria.