I recently brought JOM coilovers front and rear from ebay for £180 total which within the price was the postage and the range i could adjust is 20mm - 110mm + guarentee
I got them fitted last week and what a difference it made to the car, looks better and drives a whole lot better.
When the mechanic saw them he wasnt too sure since it was so cheap and thought they may not do the job since the spring was hard, to his surprise as soon as he put them on and adjusted the ride hieght and took the car for a test drive he said they are really good, really good ride and firm.
Check on ebay a full set for £180 is excellent price.