You can usually pick up a MHH Engineering/Torqueleader/Gedore branded torque driver on ebay for £50 or less.
They got rebranded over time and then acquired by Gedore, but I'm pretty sure even some of the latest ones are still made in Guildford. I've been told these are/were considered the industry standard.
The ones that usually stick around for a while are "overpriced" or are male square drive, rather than female hex, but you can get lucky sometimes. You'll usually need to get a set of bits as they're rarely a full set and a maybe a generic T-handle with a male 1/4" square drive that connects at the back for better grip.
Be careful to buy a 1-5Nm one and not one of the cNm range ones. "Quickset" also doesn't meant they're adjustable - it means they're quick to set and calibrate at a fixed torque.