This was suggested by someone.
Pardon our interruption...
www.ebay.co.uk
I am also looking to buy a kit and this appears to be a reasonable price.
I just bought mine through Renaut parts direct. Arrived within 2 days of purchase - bought lots through them so far and no complaints so far!
However I think the cambelt kit is actually made by Gates so you could probably find a cheaper kit that way - then just buy a gen dephaser if you need one.
I purchased this kit and turned up next day with no issues. All genuine Renault complete with the camshaft end caps.
I looked on the RPD website, but they seem to all be out of stock. I got lucky with a new aux belt kit from a forum member.
I bought this kit Monday evening, arrived today, very quick service!
It has the plastic cambelt pullys and tensioners, not sure if steel alternative is advised?