Just done a bit of research on the venom website - considering a Mk3 golf GTI 16V - all prices include VAT
Koni
Coilover, 30-65mm drop, damp adjust, £722.66
sport kit (springs and dampers), 35mm drop, damp adjust, £423.91
str.t kit (springs and dampers), 35mm drop, fixed damp 30% up on std, £250.00
staggerng.....£300 extra for 'coilover' functionality
Bilstein
PSS9 coilovers (B16), 20-60mm drop, damp adjust, £1127.12
B14 coilovers, 20-60mm drop, fixed damp 30% up on std, £677.93
B12 kit, 35mm drop, fixed damp 30% up on standard, £434.70
Spax
RSX coilover, 30-80mm drop, £517.49
PSX kit, 'lowered', damping adjustable, £413.99
VSX kit, 25mm drop, 30% uprated damp on std, £287.49
AP, new boys
coilover, 25% uprated over standard fixed damping, 30-80mm drop, £318.08
interesting.