Some people prefer to pay more to get a premium product, but if you're after a comfortable leather chair for using at your computer desk, ASDA have them in-store for £23! I'd previously used the basic one from Argos, which I was happy enough with, but this one is much more cushioned, has lumbar support, and a higher headrest so I can sit back and relax. It also feels quite sturdy - I'm not worried about a leg falling off when I sit down!
It's not a £200 model, but easily compares to chairs selling for at least twice what ASDA are charging, so I grabbed one right away!!
(Image is a stock photo of a similar chair that I found online)