The eBay link is not the part you're looking for, the item in that link is for the upper hose which is highlighted in blue on that diagram. It is an easy job to replace the hose and can be done in a short time with the simplest of tools.
say wha...? fit a catch can! problem solved!
the one you put a link to is for the lower one as said this one i have put a link to is for the top one which you have put a picture of on here http://www.ebay.co.uk/itm/Silicone-Crankcase-Breather-Hose-VW-Golf-1-8T-AUM-AUQ-/150993461267?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2327e96013