The same one is currently on Ebay for £19.99 to £24.99. I saw a different model on a couple of camera sites around the £25 mark.
Brand New Product and Exclusive to 7dayshop.com. This hotshoe spirit level features five built in LED lights to confirm your cameras horizontal position. Highly sensitive system for picture perfect results. No more wonky horizons as the five LED's help to confirm and guide you as to when camera is in a perfectly level position. Red LED's on outside, Blue on the inside and green LED in middle lets you know that your on target !
Especially useful for landscape, reference and architectural photography. Compact and lightweight too !
Two particular benefits are
1. Use day or night - LED's have 5 brightness levels so as not to be too bright at night-time - ordinary spirit levels are hard to see in the dark hours without a torch !
2. Can be used whilst actually taking pictures as lights are positioned at the back of the unit and are still visible whilst looking through your viewfinder.
Measures a super compact L35 x W35 x D2.2cm Weight Just 11 grams
Fits all camera's using a standard flashgun hotshoe fitting. Use with digital SLR's or 35mm (film) SLR cameras.
Requires 2 x CR1130 Batteries which are included (battery life up to 40 hours).