Hi, yes TRW are the OEM brand and you won't go wrong with these. I fitted these to my 2008 GTI.
Just checked my autodoc order history and went for the no surcharge option (part numbers BHN952 and BHN951).
The ones in your link are the BHN951E and BHN952E remanufactured part nos. which means you will need to send your old ones back to them to recover the surcharge.
One of my old calipers had been previously replaced by a non-TRW item so I just went for new as worked out cheaper than if I couldn't recover the surcharge.