with my Nikkor 18-55 VR lens (Nikon AF-S DX Nikkor 18-55mm 1: 3.5-5.6G VR lens) is canceled, the holder / the bayonet ring. A repair at Nikon Service (Munich) would have cost about 72 EUR.
I've then there brought this ring for 13 EUR and replaced the defective ring on my lens itself - by this super Instructions:
[...]
The whole has about 15-20 minutes. Lasted and now holds / funtioniert my lens again super! So I would recommend it to anyone who can deal with a screwdriver to make these repairs themselves. According to the Forum of ring fits all Nikon lenses ("suits u. Is all kit lenses with plastic bayonet equal").
Updated on 03/04/14:
Meanwhile, the cost of spare parts at amazon EUR 20 as it is to Nikon service point incl. Shipping costs even more favorable. a year ago it cost here around 6 EUR, which is already a whopping price increase!