Car went into Audi for a service yesterday and unfortunately on the health check, they've picked up a NSR spring broken Obviously Audi want an extortionate amount of money to fix it with the spring alone being £122 inc. VAT plus labour so total bill of £296. I've been looking around the Interweb and I can pick up a Bilstein OEM replacement for £55 or £76 for two which matches my spring weight code but alternatively I've seen the Eibach Pro Kit for £138.00. It's an SE Avant - sometimes it feels a little bit spongy which is expected with SE suspension but I have 19" wheels so the ride can be a little bit harsh on country roads. If I go for an Eibach kit, will the ride degrade much? Also, what kind of price am I looking for an indie (on average) to fit as all 4 corners will need doing. Is it doable myself or is it a pig of job? I've currently got no spring compressors so will have to buy tools as well to add to the cost if I do myself but I do my own brakes so not too un-handy in that department. The other alternative is to look for a whole set of S-Line/Sport suspension off Fleabay but not sure about ending up with a load of knackered parts If just going for an Audi/Bilstein OEM spring, is that doable myself? Also, should I replace in pairs?