Various manufacturers, sizes, materials (e.g. sprung/foam/latex) and prices.
Some advice about bedding :
On average we spend about 190,000 hours in bed which is about a third of our lifetime!
One person in two suffers from back problems
In terms of comfort the mattress counts for two thirds and the bed base a third
Bedding should be changed, on average, every ten years.
Investing in a good bed and mattress is not as expensive as you might think –twenty two centimes a night.
A medium priced bed base and mattress (140 x 190) could be only about 800€
A new, good quality bed base and mattress could mean about 45 minutes more sleep!