While looking around in at various furniture companies doing our own research we came across www.furnitureexpressspain.com whose prices seem really good. Even though they are in Estepona they already deliver to Murcia. They are worth checking out, even comparing their prices. They said there is no extra charge for delivery to Murcia. Everything is installed including lights etc, they even allow you to mix and match.
Don't want to be seen as promoting a company as per this web site, but we were very impressed and they were very open about their prices.