This is a basic sofa and the colour won't appeal to everyone, but anyway you can get a Large Hygena Ava Sofa in Teal for £167.73 delivered at Argos.
The sofa is priced up at £191.99, so you need to buy another item of indoor furniture to bring the price up to £200 to qualify to use the 20% off code - FURN20. I bought a bathroom drawer unit for £8.99.
3 other colours are available, but they work out at £198.95 delivered.
The sofa is on a 58 day delivery schedule, but this wasn't a problem for me.