Sorry in advance if this is someone on here selling this but this is plain stupid..
http://cgi.ebay.co.uk/ONE-audi-a3-30mm-rear-lowering-spring_W0QQitemZ230346674417QQcmdZViewItemQQptZUK_ CarsParts_Vehicles_CarParts_SM?hash=item35a1bb50f1 &_trksid=p3286.c0.m14&_trkparms=65%3A12|66%3A2|39% 3A1|72%3A1683|240%3A1318|301%3A1|293%3A1|294%3A50
Who in there right mind buys one spring? the other is for sale further down the page but seriously i think you should have to pass a test to use ebay.
He says in his advert that 'These lowering springs dont come individualy, so if a spring breaks you need to buy a complete kit'
sorry for a pointless thread but I couldn't resist.