i got an ebay one
fitted the bracket (which required some modification)
cut the coin tray area out and it wont fit, so at the moment i have the bracket fitted and hole where it should go-its been like that for about 5 months becuase im too lazy to finely cut the console to get it to fit
quality of the actual armrest itself is good, i think the issues with the ebay one's have been the bracket snapping. it is quite a soft alloy bracket. you could always get the VAG bracket from a VW dealer and fit with the ebay armrest.
one from seat fitted costs around 200 all in fitted iirc, and from what ive spoken to dealers they find it a nightmare and have had to pull all carpets back and weld them in place at times!
Depends how much of a battle you want on your hands, some people have fitted the ebay ones with no
problem (unclefester), but i think fester never had the coin tray part his rear section of centre console was just flat so could cut it exactly to size rather than boring out the coin tray area