I paid £115 for Eibach Pro Kit from
http://www.cartech-one.co.uk/
Mine has 15mm spacers all round too. Im just about to fit Bilstein B8’s too. The stock shocks leave a lot to be desired.
Recommend a set of shortened anti roll bar links too.
Number one tip, get a four wheel alignment immediately after
lowering or you’ll scrub right through your tyres. Ask me how I know. ?