Thanks everyone for your views
I do alot of miles so a kit would be the answer
As its about £60 for a new kit I can see it will take a long time to recoup the cost
Look for a second hand one on ebay is in order.

furry-TLR, are you fitting yours or is this up for grabs

Cheers,
Dave in mizzy old Shaftesbury, mind you I did clock up 135 miles yesterday, or should i say summer.