Hi sleepsleep,
There are many manufacturers who would have a similar layering (a few examples and comments about the same idea are in post #496 here from earlier today) and have better quality/value but I have no idea which may be available in your area. You would need to call the manufacturers and retailers in your area and describe what you are looking for specifically and they could tell you if they carried or could make a mattress with similar layering.
Online, some of the options listed in post #12 here would either have or make a similar design.
Phoenix