Hi buddhafest,
Welcome to the Mattress Forum! 
While you may personally have an affinity for the Morgongava, and it certainly can be at a more “affordable” price point, I’d like to clarify a few points in your post, specifically that the latex used in the Morgongava is natural (it is a blend of 85% natural / 15% synthetic), and that it is the “most reasonably priced” latex mattress (there are quite a few similar options available online, some using 100% natural latex and even being component-style systems, such as a few listed in post #3 and #4 here). 
Phoenix