The Centra compensator is just over £1,000 (inc VAT) plus fitting.
An alternative is to fit a grease nipple to the original compensator. This involves a jig and drilling a hole in the bell housing so I don't know if it's a realistic DIY job or must be done by a dealer.
There must be about 500 2012 cars out there and the issues are pretty much fixable so if you like it go for it!
