There are loads of places to get well made sofas cheaper. The Sofa sofa group of companies are very good quality, made in the UK and very good prices.
Family have had 5 or 6 sofas from them over the last 22 years and still going strong. My mum gave her last pair to her niece after having them 10 years as it was cheaper to buy from them again rather than recover them. There are still in use 11/12 years later. As are the ones that mum bought on her second time around.
I bought mine in 2000, gave to a friend in 2004 in perfect condition. She still has it.
I currently have sofas from next and they are good quality in cotton velvet, which I will hopefully keep forever (I hate the cheap polyester type of velvet sofa.) But new sofas will be from the sofa sofa group as will need for my kitchen living area.
They trade under 4 or 5 different brands, each with different styles, I always check to see that the company address is viaduct works, Crumlin, South Wales. As there are similar companies trading online but this one is the best. Excellent customer service.
Marks and Spencer, John Lewis, next, furniture village all do great sofas if you want to sit on them first. The better ranges like ideal home at dfs are good too. Like others have said the firm memory foam cushions last better than filled cushions that need plumping.
But if low price is not that high a priority, at your price point, have you looked at heals, Wesley Barrett and Ercol?