Thought this was a good deal seen as though the next prices are.
£24.95 - GearZap.com
£24.95 - Mobile Fun
I know there are cheaper other brands out there but they are usually terrible build quality and don't work as well on screens as the ones which are a little bit higher in price.
Check some videos out on Youtube there is usually people comparing this stylus to the other cheaper brands such as the £2 ones from eBay etc.