Cheapest I have ever seen these, usually retail around £45-50 mark.
3.3% QUIDCO also available.
(Currently £48 on Pro Direct Cricket: http://www.prodirectcricket.com/products/Masuri-Club-Senior-Stem-Guard-Batting-Equipment-Yellow-120916.aspx?spr=1)
The Men's StemGuard attaches to existing Masuri Vision Series helmets with moulded clips. The attachment has been designed to give batsman free movement, while offering protection to the vulnerable region at the back of the head and neck. Masuri extensively studied all information available in order to develop StemGuard. We have worked with a number of cricket's national governing bodies during the development to take StemGuard from concept to a production capable prototype within three months. This new innovation by Masuri combines an impact modified TPU honeycomb with military grade crush foam in order to maximise impact absorption, giving players much more confidence when batting. *This StemGuard is compatible with the Masuri Club helmet.