Hi CheapSk8,
The only way to know this would be to get the specific details about the layers in the mattress (or the model if the details are available online or on the Natura site) and then compare it to other similar mattresses. Normally Natura is on the costly side even though they tend to use good quality materials but at 50% off (if the discount is off their legitimate price rather than MSRP) it could be very good value. If you post the specific model of the layering , the size and price you are paying, whether it is mattress only or for a set and anything else it may include then I’d be in a much better position to give you my thoughts about its value.
A mattress protector is an important part of a mattress purchase IMO to protect the mattress from stains and accidents and it will also protect the warranty (which is void with even the smallest stain or watermark on the mattress). There are many tradeoffs involved though in choosing a mattress protector (there are 3 basic types) and you can read more about these in post #89 here.
Pillows are very much a personal preference item but having said that they are also an important part of your sleeping system. The “best” pillow is one that will keep your head and neck in good alignment in all your sleeping positions and has the “feel” and other characteristics that you like.
There is more about pillows and some links to good information in the pillow thread here.
Of course not … it’s the reason the forum is here
Phoenix