Their search engine is a bit suspect so I normally track down a part number on another tool site and then use that to find it - eg: 'sealey torque wrench' will reveal most but not all of them.
Halfords professional range. 3/8" drive. Excellent quality. £50. I have one and am well pleased with it. It was also Ride magazine 'Best Buy' if that means anything?!?!
Have a look at the Discount Offers thread. I've just found an excellent supplier. Send an e-mail, quote the Sealey part number, it will appear in the hand-tools section as if by magic within a day and be cheaper than the Sealey offer price.