About 7 years ago we went to a major retail bed outlet and spent somewhere around £900 on a new deluxe mattress.
It felt great for the first 3 years then ok for the next 3, but in the past 12 months it become a real uncomfy bastard of a thing - only highlighted by having the odd stay in chain type hotels that have really comfortable beds. The pressure on my hips, shoulder, even my ankles woke me up frequently. It would appear that the cushioning top layer has pretty much flattened completely and we were effectively sleeping on the much firmer next layer (and yes, we did turn it regularly)
Anyway, last week, in a fit of rage I/we decided that the mattress had to go and conveniently I noted that Lidl were punting Emma memory foam mattresses for £279 - quite a bit cheaper than I could find elsewhere. The online reviews seem to be good and I was getting desperate for a pain free nights kip.
Well, what a difference I have to say. I've had 4 nights of uninterrupted sleep and that in itself is worth every penny.
*I realise that many in the industry suggest that 7 - 10 years is the expected lifespan for a mattress. For the money I paid, I really was expecting at least the full 10, rather than 3 good and 3 ok years. I can have 3 Emma's (

I noted Lidl also had bigger sizes on offer too.