hi, to furnish a new appartment it would cost you around 4000 ryal per room to get a decent furnature, if you are looking for a much cheaper prices with the same quality as home center or others you can go to Najmah market and ask for haraj souq, this souq is the main importers of ready made furnature from Asia and china, you can find good quality furnature with good prices, ask for AL-Nisri trading co. they have there around 4 shops and all been imported from abraod and again selled back to other big stores here in doha with triple or double of the price.

hope i helped you on this matter