£9.99 insore at Clearance Bargains, which is Argos's clearance warehouse in Corby, £49.99 in Argos & B+Q !
They also had the B+D powertape for £4.99
They had 2 huge cages of them as you walk in the door approx 400 or so of each one i would guess
The Black & Decker BDL230S Automatic levelling laser with incorporated stud, AC live wire and metal detector can be used for a wide range of applications including: installing shelves, fitting curtain rails, fitting electrical switches and hanging wallpaper boarders. The sensor function can be used as a precaution prior to drilling. It levels in less than 5 seconds so is easy to set up and gives accurate results.