Been looking for one of these timers and they are about £6 wherever I look. However at £2.99 for this is a bargain. Unless someone has spotted this in the pound shop!!
There is a choice to buy a twin pack of the mechanical version if you want but for me the digital is best.
From the web site
Choose from a twin pack of mechanical 24hr timers or a digital 7-day timer
With child-resistant socket
3 year manufacturer’s warranty