Lidl will have these toning belts instore from Thursday 13/02/14 for £14.99 which seems reasonable, they come with a 3 year warranty as well.
Product Information :-
A simple and effective way to tone abdominal muscles using Electrical Muscle Stimulation (EMS)
With adjustable intensity and 5 training programmes ranging from 22 - 31 minutes
Includes 2 additional adhesive electrodes for individual muscle stimulation
Adjustable waist approx. (cm): 80 - 130
3 year manufacturer's warranty