I got two of these from different Boots stores today, some stores may have it on display as £7.99 but ask if it is on offer and it comes up as £3.99.
Details from Boots.com:
3 in 1 convenient shaving tool to shave, edge and trim your facial hair.
4 blades with unique titanium coating
NEW titanium edging blade for precise edges along sideburns, beards and under nose
NEW lubricating strip with Aloe and vitamins and ProB-5 for exceptional glide
Innovative, ergonomic handle, safe to use in the shower
Easy to use
Powerful, plus 1 AAA battery will last over 3 months
4 different trimming levels to create various beard lengths
EDIT: Forgot to say if you go for the one online dont forget about Quidco.